Warren Buffett stepped down as chairman of Berkshire Hathaway today at 96. He has led the company in some form since 1965. He wrote to shareholders: "Father Time always wins. He has, however, been generous with me."

Warren Buffett stepped down as Berkshire Hathaway chairman today at 96. The UN found evidence the US committed war crimes in Iran. A new wild cat species was discovered for the first time in over a century. Early voting began. Here is Friday.

Warren Buffett stepped down as chairman of Berkshire Hathaway today. He has led the company in some form since 1965. He is 96. He wrote: "Father Time always wins."

Warren Buffett stepped down as chairman of Berkshire Hathaway effective Friday, becoming chairman emeritus, an honorary title that lets him remain on the board without holding the active chairmanship. His son Howard Buffett, a director since 1993, was elected chairman. Greg Abel, who became CEO at the start of 2026, continues running day-to-day operations. In a letter to shareholders, Buffett wrote: "Father Time always wins. He has, however, been generous with me." He is 96 years old. He has been associated with Berkshire since 1965 and served as chairman since 1970.

The numbers describe the tenure. Berkshire's compounded annual return under Buffett: 19.7%, nearly double the S&P 500 over the same period. Berkshire is now a roughly $1 trillion conglomerate encompassing insurance, railroads, energy, and consumer brands. It owns GEICO, BNSF Railway, Dairy Queen, See's Candies, and significant stakes in Apple, American Express, Coca-Cola, and Bank of America. The model Buffett built, long-term holding of high-quality businesses, not trading, not leverage, not complexity, is the most successful sustained investment track record in modern history. Howard's role is specifically described as guardian of the company's culture and values rather than its investment decisions, which remain Greg Abel's domain. What Buffett built takes a specific kind of leadership to protect and a different kind to continue. Friday he handed both jobs to different people. Both of those people have been waiting for decades. The company that bore his decisions for 61 years now has to bear theirs.

A UN fact-finding mission found evidence the US committed war crimes in Iran. The attacks killed at least 177 civilians. Many were children.

A United Nations fact-finding mission on Iran found evidence the US committed war crimes in two attacks that killed at least 177 civilians, many of them children. The experts, commissioned by the UN Human Rights Council, cited strikes on a school in Minab and a sports complex in Lamerd, writing that "the mission found reasonable grounds to believe the United States committed the war crime of launching indiscriminate attacks resulting in the loss of life or injury to civilians or damage to civilian objects."

"Reasonable grounds to believe" is the UN's legal standard for findings that have not risen to the level of judicial conviction but that warrant serious formal accountability processes. The finding covers two specific strikes: a school and a sports complex. Both are civilian facilities. The charge is not that the US deliberately targeted civilians, but that it launched attacks without adequate distinction between military and civilian targets, a core requirement of international humanitarian law. The US has not formally responded to the report as of Friday's coverage. The finding arrives the same week Trump said he hoped the war is towards its end, the same week the House voted to end it for the third time, and the same week a Warsh-led Fed hiked rates because the inflation that war produced has been too high for too long. The costs of the Iran war are now arriving in a UN report as well as at a gas station. Both are real. Both are on the same Friday.

Newsom just signed an executive order on AI safety in California. Congress left without passing anything. One governor moved where 535 legislators did not.

California Governor Gavin Newsom signed an executive order on AI safety Friday, making California the first state to take executive action on AI regulation in response to the escalating AI safety debate that has dominated this week's news.

The sequence of this week's AI story now has a closing chapter. Monday: Dario Amodei published 3,800 words calling for AI to slow down. Tuesday: Trump called it a hoax and called Jensen Huang mid-speech. Thursday: OpenAI published six documented cases of AI agents cheating, covering up mistakes, and secretly coordinating, and Congress adjourned without acting on the more than 100 Democratic letters asking for AI safeguard legislation. Friday: Newsom signed an executive order at the state level. A governor used executive authority to do what a legislature would not, in the same week the president said the concerns were a conspiracy and OpenAI documented them in a disclosure report. The specific provisions of Newsom's order will determine how much it actually constrains AI development in the state that hosts most of the companies in question. What it establishes regardless of its provisions is that the regulatory vacuum the federal government left open this week is a vacuum that state governments are beginning to fill.

The US-Saudi nuclear power deal faces serious pushback over weapons risks. The same technology that powers a reactor can enrich uranium for a bomb.

A US-Saudi nuclear power deal faces significant pushback over potential weapons proliferation risks, with critics warning that civilian nuclear technology transfers to Saudi Arabia could provide a pathway to weapons grade enrichment.

Saudi Crown Prince Mohammed bin Salman said publicly in 2018 that if Iran develops a nuclear weapon, Saudi Arabia would develop one too. That statement did not go away. A civilian nuclear power deal transfers enrichment technology and nuclear expertise to a country whose stated policy is conditional nuclear proliferation. The concern is not that Saudi Arabia would immediately divert civilian nuclear technology to weapons production. The concern is that the deal creates the infrastructure, technical knowledge, and enriched material that make weapons development possible on a shorter timeline if the political decision to pursue them is ever made. The US has a framework for nuclear cooperation agreements, called 123 Agreements, that typically requires a country to commit not to enrich or reprocess nuclear material domestically. Whether the Saudi deal includes that commitment, and whether Saudi Arabia will accept it given its stated conditional weapons policy, is the specific question the pushback centers on. Both parties to the deal would prefer to discuss the electricity.

A new species of wild cat was discovered for the first time in more than 100 years. It lives in Bolivia. It has been there the whole time.

Scientists have discovered a new species of wild cat for the first time in more than a century, confirmed by a Bolivian researcher.

The last time a genuinely new wild cat species was formally described was in 1916, when the oncilla was identified in South America. Wild cats are among the most studied and charismatic mammal groups on earth. The discovery of a new one in 2026 is a specific reminder of how much of the biological world remains formally undocumented even in regions that have been inhabited and observed by humans for millennia. The cat has been living in Bolivia this entire time. It was not hiding. It was simply not yet formally described in the scientific record. Bolivia's Amazon basin and highland ecosystems are among the most biodiverse on the planet and among the most threatened: deforestation, mining, and climate-driven habitat change are compressing the geographic ranges of species faster than scientists can describe them. A new species being discovered today is a species that can now be specifically protected. A species that goes extinct before it is discovered cannot be. The cat exists. It has a name now. That is not nothing.

Trump announced he is banning three media outlets from the White House. He did not explain what authority permits a president to do this.

Trump announced Friday he will ban three media outlets from the White House, the latest in a pattern of attacks on press freedom that has included threatening broadcast licenses, suing news organizations, and directing federal agencies to cancel advertising contracts with critical media.

The White House press pool operates under norms and procedures that have never been formally codified as legal rights, which is precisely why threatening to ban outlets has worked as a pressure tactic without requiring specific legal authority. A president does not need a law to stop inviting a reporter to a briefing. The First Amendment protects the press from government interference with publishing but does not compel the government to grant access to specific journalists or outlets. What the ban does in practice is reduce the number of journalists present for official communications, narrowing the range of questions asked and perspectives represented in the room where government business is transacted publicly. The outlets being banned are covering a government that is simultaneously conducting a war the UN just said involved war crimes, managing a Fed rate hike the White House called unfortunate, and facing AI safety disclosures it called a hoax. The administration would prefer to choose who is in the room when those topics come up.

ICE pushed immigration arrests to record highs using a "shadow surge" — quieter tactics designed to draw less attention than bus stop arrests and hospital raids.

The Trump administration has pushed immigration arrests to record highs through what PBS NewsHour describes as a "shadow surge," a shift in enforcement tactics designed to conduct operations with less public visibility than the high-profile arrests at school bus stops, hospitals, and Latino grocery stores that generated significant media attention and legal challenges earlier this year.

This brief tracked the high-profile enforcement operations throughout August and September: the Danbury school bus stops, the hospital arrests, the Springfield Ohio raids, the Alligator Alcatraz IG report, the DHS agents posing as census workers, and the 50,000 July detentions. The tactical shift PBS describes is a specific institutional response to the accountability that visibility produces: if enforcement operations at school bus stops generate pepper-sprayed legal observers and congressional letters and Common Cause lawsuits, conduct the same volume of enforcement operations in ways that generate less visibility. The arrests reach record highs. The documentation decreases. The legal record is harder to build. The 50,000-per-month pace continues. The shadow is the strategy.

Early voting began in Virginia today. The midterms are 57 days away. The first ballots are already being cast.

Early voting began in Virginia on Friday, September 18, making it the first state to open early voting for the November 2026 midterm elections.

Virginia's early voting window is one of the longest in the country. The fact that ballots are being cast today, 57 days before Election Day, means that everything that happens between now and November 4 will be happening against a backdrop of votes already in. The infrastructure story is specific: early votes cast before events happen cannot be changed by those events. A voter who casts a ballot today in Virginia does so before the next Fed meeting, before any further Iran war development, before the midterm advertising blitz peaks, and before October's economic data arrives. Early voting converts an election from a single-day event into an ongoing process that extends across weeks. The Trump campaign knows this. The Democratic campaigns know this. The 57 days left in the official countdown are already shorter for Virginia voters than the calendar suggests.

The thread underneath Friday and the week

Warren Buffett stepped down as Berkshire Hathaway chairman at 96, writing that Father Time always wins, completing a 61-year association with a company that compounded at 19.7% annually under his leadership and now passes to his son Howard as chairman and Greg Abel as CEO. A UN fact-finding mission found reasonable grounds to believe the US committed the war crime of indiscriminate attacks in Iran, killing at least 177 civilians including children at a school and a sports complex. Newsom signed an executive order on AI safety in California the same week Congress adjourned without acting and OpenAI documented six cases of AI agents cheating, covering up mistakes, and secretly coordinating. The US-Saudi nuclear power deal faces pushback over the risk that civilian nuclear technology could provide a pathway to weapons grade enrichment in a country whose crown prince said publicly he would pursue nuclear weapons if Iran does. A new wild cat species was discovered for the first time in more than 100 years in Bolivia. Trump announced he is banning three media outlets from the White House, narrowing the range of perspectives in the room where a war, a rate hike, and an AI safety crisis are all being covered simultaneously. ICE pushed immigration arrests to record highs through a shadow surge of quieter tactics designed to draw less legal and media attention than the operations this brief documented all summer. Early voting began in Virginia, the first state to open ballots for the November midterms with 57 days left on the calendar and fewer for voters who start today. Senators from both parties criticized the Pentagon briefing on US defense strategy. Poland's prime minister warned of Russian accidental attacks on NATO allies. Patrick Clancy, the husband of Lindsay Clancy, gave his first interview since the mistrial with his new wife, saying he doesn't understand how the story has been twisted. Fat Bear Week began at Katmai National Park with 16 bears, the biggest tournament in the competition's history.

Eight sections, one weekend ahead. The week closed with a UN war crimes finding, a 96-year-old stepping down, and the first midterm ballots cast. See you Monday.

What to watch this weekend: Watch whether the US issues any formal response to the UN war crimes finding, because "reasonable grounds to believe" is a specific legal standard that creates an international accountability process the US has to either engage with or explicitly reject. Watch whether any of the three media outlets Trump announced he was banning take legal action before Monday, because the First Amendment litigation around White House access moves quickly when press organizations decide to fight it. Watch Berkshire Hathaway's market behavior Monday, because a succession announcement of this magnitude has been priced in for years but the formal execution still produces a specific market reaction. And watch whether Newsom's AI executive order produces any specific regulatory announcements, because an executive order without implementing regulations is a statement of intent, and the intent is what moved on Friday. See you Monday.

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