Netanyahu is not particularly popular, but escalation and broadening of the conflict in the Middle East could at least yield political gains domestically. It really depends on how craven he is. You also have an Iran and other autocracies that want to avoid increased domestic unrest. At the end of this runway is regional nuclear exchanges or dirty bombing without any guarantees as to what might be a target. Proxies could bomb other proxies or principals, principals could bomb proxies or other principals or even non-participants. In my lifetime, I’ve experienced two tense nuclear moments, the Cuban Missile Crisis and Reagan’s 1983 nuclear incident (which was full-on panic in northern Europe and most Americans slept through). This time, however, there is very little civil defense discussion in the US. Countries like Germany have only recently realized bomb shelters still have uses other than tourism. I remember getting nuclear first aid classes when I was in fourth grade, like how to clean a contaminated friend and bag all their clothing, duck and cover, the limitations of iodine tabs, and a trip to a mine converted for CD purposes to house about 500 people. Today’s advice is not to use hair conditioner after a nuclear attack.