As Russia pounds Ukrainian cities, Kyiv tries to turn the tide with battlefront innovation
Massive Russian attacks across Ukraine overnight killed at least 22 people nationwide and wounded more than 130. Russia has stepped up the size and pace of its attacks on Ukrainian cities in recent months, but on the battlefront, Ukraine is trying to turn the tide. Nick Shifrin reports on Ukraine's efforts, and speaks with retired U.S. Army Col. Robert Hamilton for more on the war.