Ukraine evacuated residents from a besieged city Tuesday along the first safe corridor established with Russia since Moscow invaded its democratic neighbor nearly two weeks ago, sparking a humanitarian crisis and an exodus of refugees that has now reached 2 million.
The Russian assault has stalled on the ground but brought increasing devastation from the air, leaving cities from Mariupol in the southeast to Sumy further north encircled and without heat, electricity, water and food.
The two countries agreed to a cease-fire in Sumy early Tuesday to let civilians escape the northeastern city after another night…
