most of the shelling is coming from artillery. most of the destruction is coming from artillery. it s not coming from russian aircraft. and then if we were to police a no fly zone, it means we would probably have to take out russian defence systems and then we would have nato aircraft in the air alongside russian aircraft and then the potential of shooting them down and then that leads to an escalation. two british surgeons have held a virtual, 12 hour war surgery training course in london, for over 200 healthcare professionals in ukraine. it s hoped the tuition will help them deal with injuries from the fighting and save lives. jonny dymond reports. dobryy ranok good morning from london. a zoom tutorial with a difference. in london, two surgeons trying to share what they know with colleagues in need of help.