Russian presidential envoy Kirill Dmitriev is due to meet U.S. special representatives Steve Witkoff and Jared Kushner when they arrive in Moscow on Saturday, according to two people familiar with the visit. The meeting comes after U.S. President Donald Trump said Washington had a fresh concrete proposal aimed at ending the war, now in its fifth year, without providing details. Ukrainian President Volodymyr Zelenskiy said the envoys would travel to Ukraine on Sunday after their Moscow visit. Russia and Ukraine remain sharply divided over a settlement. The Kremlin said Russian President Vladimir Putin’s position that Ukraine cede the entire territory of four regions claimed by Russia and abandon its plan to join NATO was unshakeable. Since peace talks last took place in February, both sides have intensified long-range attacks on each other’s territory, while fighting at sea has also escalated. Ground lines have changed little, with Russia making gradual gains in its effort to seize all of Ukraine’s Donbas region. Ukrainian drone strikes have contributed to fuel shortages and higher prices for Russian motorists, while about 30 attacks on large warehouses, mostly belonging to Wildberries, have affected the consumer economy. A Russian drone attack struck the headquarters of Ukraine’s SBU security service in Kyiv on Friday, the 10th straight day of heavy attacks on the capital, prompting Zelenskiy to vow retaliation.