The Trump administration "is making quite an energetic and sincere effort, in my opinion, to stop hostilities, to stop the crisis and to reach an agreement that is of interest to all those involved in this conflict," Putin said during a meeting of his top officials to prepare for the Alaska summit, according to a readout published by the Kremlin.

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.