Ukrainian President Volodymyr Zelenskyy said in a social media post on Sunday morning that “hundreds of thousands” of Ukrainians were without electricity.

Russian Orthodox Church representatives arrived in the U.S. this week, repeating claims that Ukraine persecutes Christians and raising questions about religious freedom.

Ukraine has used long-range drones to attack Russian oil platforms as it expands its strikes on the country's energy sector.

Russian President Vladimir Putin spoke for four hours during his yearly address to the nation. Putin noted the war in Ukraine as U.S. representatives continue to push for a ceasefire. CBS News' Haley Ott reports.