that cool the reactor. and if that were to happen, the nuclearfuel inside would melt down, so it's really important that the russian forces and the ukrainian forces stop firing in the direction of the power stations. this loss of cooling was what caused the nuclear disaster at fukushima injapan in 2011. but while that was triggered by a natural disaster, a tsunami, the invasion of ukraine has brought conflict close to working nu clear rea cto i’s . with the russians now controlling the site, the immediate danger has passed. but concern remains over why a nuclear plant was a military target. victoria gill, bbc news. for more on this i am now joined by tariq rauf. he is the former head of verification and security policy for the international atomic energy agency. we have heard this incident being