hello and welcome, if you're watching in the uk or around the world. the us says president biden and his ukrainian counterpart, volodymyr zelensky, have agreed on the need to pursue what they called "diplomacy and deterrence" in response to russia's military build—up on ukraine's borders. the two leaders spoke for almost an hour this afternoon as western allies continue to fear an invasion is imminent. 0ur diplomatic correspondent paul adams is in kyiv. we've got this weird phenomenon of apocalyptic warnings from the west, and this odd sense of calm here in kyiv which persists to this day, even days ahead of something that could be pretty grim. i was talking to a ukrainian writer early on who said that effectively, ukrainians were inoculated against fear and panic back in 2014, when the war in the east of the country erupted — that war has gone on ever since and,