Vladimir Putin has had a tough few months. His military’s much-feared summer offensive has made incremental gains in Ukraine but not nearly the advances he had hoped. His economy has sputtered. Donald Trump has grown fed up with Putin’s repeated defiance of his calls for a cease-fire and, for the first time, has targeted the Russian president with consistently harsh rhetoric. Last week, Trump slapped one of Russia’s major trading partners, India, with sanctions.

Putin needs to buy time to change the trajectory of the conflict. So the former KGB spymaster has given Trump something that the U.S. president has wanted for months: a one-on-one summit to discuss the end of the conflict. Trump leaped at the chance. But as the two men prepare to meet in Alaska on Friday, foreign-policy experts—and Ukrainian President Volodymyr Zelensky—are warning that Trump could be walking into a trap that the Russian leader is setting on American soil.