NPR's Michel Martin talks with former U.S. Ambassador to NATO Kurt Volker about NATO's response to the Russian drones shot ...

On the U.N. General Assembly's opening day, President Trump declared Ukraine "can win back all territory lost to Russia," marking a sharp reversal from earlier statements he's made about the war.

NATO countries are warning Russia that they will retaliate -- in unspecified ways -- if the country continues to fly military aircraft in their airspace.

European leaders, wary Trump could strike a Ukraine deal with Putin that endangers the continent's security, will hold "an emergency virtual summit" Wednesday with Trump before the U.S.-Russia summit.

Trump cancels government funding meeting with top Democrats, Trump -- in a reversal -- declares Ukraine "can win back all territory lost to Russia," Jimmy Kimmel returns to late night.

NATO and Polish officials say they're awaiting the results of a military assessment before deciding on a response to more than a dozen Russian drones that flew into Polish airspace Wednesday.