World war of Russia and Ukraine.

The wide-scale invasion of Ukraine has dramatically changed the mood in Kyiv, the capital, as a nation woke up Thursday, Feb.24, with the new reality that it is at war. Ukraine's military says Russia is taking casualties in fierce fighting, but Russia's military is telling a different story.

The Ukrainian military says thousands have already joined up; Ukrainian Defense Minister Oleksii Reznikov said the service is now accepting enlistees over age 60, as long as they're physically able.

"Many residents of Kyiv are trying to evacuate towards the West," NPR's Tim Mak said on Morning Edition from Ukraine. "There are long lines that we've observed all day at ATMs, gas stations and supermarkets. In fact, right now, as I speak to you, we're in line to get gas. Traffic is at a standstill leaving town, making it really difficult for people."