Here’s what you need to know:
President Trump has fired James Comey, the F.B.I. director, citing his handling of the investigation into Hillary Clinton’s emails.
In a first since the Watergate scandal, the president dismissed the person leading an inquiry bearing on him: Mr. Comey was also investigating Russian meddling in last year’s election.
Mr. Comey, who was three years into a 10-year term, learned of the decision from news reports while addressing F.B.I. employees in Los Angeles.
Mr. Trump approved a plan to arm Syrian Kurds with heavier weapons to fight ISIS, despite strong objections from Turkey.
The Kurdish militia, known as the Y.P.G., will participate in the battle to retake Raqqa, the Pentagon said. But Turkey insists that the militia is linked to Kurdish separatists. Recep Tayyip Erdogan, the Turkish president, is scheduled to meet Mr. Trump in Washington next week.
• The Russian hacking attack intended to disrupt the French election was a reminder that cyberattacks can also be defeated.
In Washington, the director of the National Security Agency testified before a Senate committee that U.S. intelligence agencies watched the intrusion unfold and warned their French counterparts.
The digital team of the target, the French president-elect, Emmanuel Macron, opted for a “cyber-blurring” strategy, creating false email accounts and documents.
Businesses across France hope that Mr. Macron will reduce regulations, but trade unions have already vowed to stop him from dismantling labor protections.
Manuel Valls, above, a former prime minister, said that he was running in parliamentary elections with Mr. Macron’s movement. But party officials said they might not have room for the president-elect’s onetime boss.
Here’s a look at reactions to Mr. Macron’s victory from writers across the political spectrum.
• Russia’s Victory Day parade served as a reminder of how isolated the country has become. Igor Dodon, the pro-Russian president of Moldova, was the only foreign leader in the reviewing stand.
Ukraine said that, starting next year, it would no longer celebrate victory over the Nazis in tandem with Russia on May 9, but a day earlier, when it is observed in much of Europe.
No one has ever reached the top of the Himalayan peak K2 in winter.
Many have died trying. It is the world’s second-highest, but most dangerous mountain, with hurricane-strength winds and freezing temperatures.
This winter, a group of Polish climbers will try it. Our sportswriter went to meet them in Krakow, where they are training for the mission.