sustained attacks on other cities on the country. mariupol, which we've been monitoring, which has been under heavy siege for days, an official said today alone, 20,000 civilians fled through humanitarian corridors. our guest is the news director of news line. michael, you've been focused on the state of the battle. and i had to say, this is not an area that have particular expertise and. i've been reading observing as much as i can. and it seems like there's been a bunch of different possibilities for this of where things are and where they go. what is your assessment of where we are three weeks into this invasion? >> look, chris, on the first admit, i'm not a military expert. i have to rely, as an reporter does, on people who know more than i do. i've been checking with european intelligence services and european ministry of defence simply because,