because we are just over 20 miles from the border with russia and we have seen through images on maxar satellite images but also from the reporting of our own fred pleitgen, who's just on the other side, that there is a massive build-up of russian weaponry and russian troops just over in that belgorod area. also our fred pleitgen was reporting earlier that he was hearing a lot of outgoing artillery. we've certainly been hearing quite a bit of that. landing around the city of kharkiv. a city of 1.4 million people. i'm just getting a little bit more information here. this is coming from the mayor of kharkiv. it says "dear citizens, please do not leave your homes today. due to the complicated situation, schools, kindergartens, other institutions will not be operational today until the situation becomes clearer. public transport will work as usual and i will keep you informed of what is happening and the actions of city