Russia says it invaded Ukraine to halt Kyiv's ambitions to join NATO, the U.S.-led defensive alliance, which it saw as a major security threat. It also accuses Kyiv of persecuting ethnic Russians and their culture in Ukraine.

LONDON (AP) — Russian President Vladimir Putin on Thursday praised U.S. President Donald Trump’s efforts to end the war in Ukraine, more than three years after Moscow launched its invasion, as the two leaders prepared for a pivotal U.S.–Russia summit Friday in Alaska.