Ukrainians who fled Russian invasion struggle to reunite with family in the U.S.

Inna Kozyar feels a sense of guilt and helplessness in the U.S.

A 44-year-old mother of two from a town outside Kyiv, Kozyar was able to come to the U.S. with her daughters two days after Russia launched its invasion of Ukraine. Now, thousands of miles away in Pennsylvania, she has watched as a gruesome war devastates her homeland, killing thousands of civilians and displacing millions of refugees.

"I can't sleep at night," Kozyar told CBS News, citing the recent bombing of a theater sheltering women and children in the besieged Ukrainian city of Mariupol. "I wake up in the middle of the night."