evacuation route out of the city of mariupol has failed. the ukrainian ministry of foreign affairs claims russian shelling ended plans to get people out and badly needed aid in. 200,000 people are stuck in that city alone, surrounded and cut off, no power, no running water, food running low. in the capital of kyiv where they're bracing for a huge fight, thousands of people have been coming into the city, escaping russia's relentless attack on its suburban areas. >> my feeling is that i'm afraid about tomorrow, not now. i'm worried about tomorrow. what's the next day. what's our future here. our families, our businesses, here. i have lived a good life. i don't know what's my future, what's going to happen. >> hundreds of checkpoints have been built across the capital with sandbags, concrete barriers and stacked tires. also in the capital, ukrainian