As milestones go, the invasion's first anniversary Friday is both grim and vexing. It marks a full year of killing, destruction, loss and pain felt even beyond the borders of Russia and Ukraine
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President Joe Biden made an unannounced visit to Ukraine on Monday to meet with President Volodymyr Zelenskyy.
In a harsh warning, President Vladimir Putin declared that he won't hesitate to use nuclear weapons to protect Russian territory, a threat that comes as Moscow is poised to annex swaths of Ukraine that Moscow has taken over after hastily called referendums there.