Face-to-face talks between President Trump and Vladimir Putin on Friday will give the Russian president a chance to pitch his conditions for peace, chief among them for Ukraine to hand over swaths of its territory. Putin has long coveted the south and east of Ukraine, which his army has failed to fully occupy. Trump has said he would seek to negotiate a swap that would return some of the territory Russia occupies back to Ukraine, without offering further detail. The Kremlin has declared five occupied regions to be part of Russia—Donetsk, Luhansk, Zaporizhzhia, Kherson and Crimea. Of those, Russia fully...