The idea that they could get away with nuclear weapons as long as they are tactical is delusional.

The big weapon=strategic/small weapon=tactical is flawed anyway.

Any nuclear strike on Iran, no matter how small, will by definition be a strategic attack.

While a 300 Kt strike on the advancing red hordes in the Fulda gap (thank god those days are gone) might very well be tactical as long as it is not a first-use attack.

Peak oil is not an energy crisis. It is a liquid fuel crisis.