Gaza is intrinsically linked to the Iran strike. As soon as the first bomb is dropped, rockets will start to fly both from Hamas and Hezbollah. It’s good to know Barak won’t be constrained by inevitable disapproval at the UN. It’s time the terrorists were kicked out of Gaza and Israel controlled the Strip.
Hamas is oppossed to the notion of a strike on Iran - they have often said so. They indicate that it would unleash chaos - they sound almost afraid of the consequences. But I don’t think they would be attacking Israel themselves. Hamas is allied to the Gulf States, who have enlisted them as being against the Shia rivals, so they would probably sit on the sidelines.
Hezbollah, of course, is quite the opposite.