Photos: Russia intensifies attacks on Ukraine as refugees flee

Updated March 13, 2022 at 1:52 PM ET

Russia is intensifying its attacks on western Ukraine.

Russian forces launched a series of missiles at a Ukrainian air base near the town of Yavoriv, killing at least 35 people. The facility is located between Lviv, the largest city in western Ukraine, and the border with Poland, a NATO member.

More than 2.5 million Ukrainians have fled their homes since Russia invaded more than two weeks ago, and around 1.5 million of the refugees are believed to be in Poland.

Polish authorities are converting sports arenas into shelters to house more Ukrainians, and scores of volunteers are helping people who cross the border find rides to safer areas.

Here's a look into the last few days on the ground. [Copyright 2022 NPR]