of nerve agent types of things that vladimir putin has used both individually against individuals that he feels are going against his regime, notably alexander navalny, as keir knows well, or he has used nerve agents or countenanced their uses in syria. that is a line across which i think nato will begin to have a serious conversation about putting up a no-fly zone. putting up a nato no-fly zone. about increasing the sanctions, closing off oil and gas i could see coming out of that. so there's room for additional sanctions and additional military action. i will say on the phosphorous,c. it creates a fire that is almost impossible to put out. it is outlawed, as you say. it's probably a click back in