Who drops the first Nuke?

Simple question. This war is going sideways at the speed of light. Iran has hit an Israeli nuclear weapons facility deep inside Israel. Iran has proven they can hit a target 4,000 miles from Iran, which means much of Europe is within range. We know that Trump is irrational beyond reason, not to mention mentally ill. BiBi, and his regime are unstable and barbaric. These two make quite a circle jerk.