President Donald Trump on Monday previewed his highly-anticipated meeting with Russia's Vladimir Putin, saying he's hopeful for "constructive conversations" but that it isn't up to him to make a peace deal.

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

U.S. President Donald Trump said on Monday that both Ukraine and Russia would have to cede land to each other to end the war and that his talks with Russian President Vladimir Putin would be aimed at taking the temperature on a possible deal.