By Pavel Polityuk and Vitalii Hnidyi LVIV/KHARKIV, Ukraine (Reuters) – Ukraine said it was hoping that the first face-to-face peace talks with Russia in over two weeks, set for Tuesday, could lead to a ceasefire, but a U.S. official said President Vladimir Putin did not appear ready to make compromises to end the war. The more than month-long invasion, the biggest of a Western nation since World War Two, has seen over 3.8 million people flee abroad, left thousands dead or injured, and brought the isolation of Russia’s economy. Nearly 5,000 people have been killed, including about 210 children,…