An aerial view on the center of Kharkiv, Ukraine's second-largest city, Saturday, Jan. 29, 2022. The situation in Kharkiv, just 40 kilometers (25 miles) from some of the tens of thousands of Russian troops massed at the border of Ukraine, feels particularly perilous. Ukraine's second-largest city is one of its industrial centers and includes two factories that restore old Soviet-era tanks or build new ones. (AP Photo/Evgeniy Maloletka)