The threats, pressure and ultimatums have come and gone, but Russian President Vladimir Putin has maintained Moscow's uncompromising demands in the war in Ukraine, raising fears he could use a planned summit with U.

Presidents Donald Trump and Vladimir Putin will hold a high-stakes meeting about the Ukraine war on Friday in Alaska, which the United States bought from Russia more than 150 years ago. They fled just weeks after Putin ordered an unpopular mobilization of citizens to boost his invasion of Ukraine.