belarus, large military exercises that russia has underway there, put in sophisticated surface-to-air missiles. deployment is there but so is the military option. russia insists it has no intention to attack but the capacity to do that is getting greater by the day, and we re now seeing this military aid flow in to ammunition from the united states, we re seeing javelin antitank missiles from estonia, stinger surface-to-air missiles, from last tvia. british have sent anti-tank weapons as well. the military balance, if you like, is that what has been shipped in so far is a little, coming in late. certainly not enough to stop a russian invasion if that were to happen, but the question at this stage is it enough to change president putin s calculus or what it would cost in terms of what an invasion would look like if he chose to go that way.