USA, UK, France, Israel and possibly even Russia
Two out of five ain't bad.
Russia no hope, Frogs sorry barely can stop my self laughing, POMs not likley, Yanks maybe depends what the state Of Israel is after the first strike, I would think they would probally spend to much time talking about it wonder how it would effect the polls, then strike some half baked backwater with next to no importance.
Israel if able to would most likely let rip.
Ironically, the country that is most likely to launch a first-strike nuclear attack is Israel, because they know that they would not face any retaliation from the West
I'll think you'll find their secret policy will be that they are only for an armagedon like scenario. That's one of the nudge nudge wink wink reasons they are kept so well armed by uncle sam.