“To the Americans I say, focusing your threats on Hezbollah and the region are pointless,” Nasrallah said. The US said it “would not only attack Lebanon but will attack Iran.”

“Your fleets in the Mediterranean do not and will not cause us to fear. We have prepared for your fleet what it takes. You Americans remember your defeats from Lebanon (early 80s), Iraq, and Afghanistan… your humiliating retreat from Afghanistan. He praised the recent attacks by Iraqi Shia militias against US based in the region.

“If an all out war erupts your fleet will be no good, your warplanes will be pointless, you will pay a heavy price.”

They are clearly talking about defending against an American intervention. Hurting American civilians in Amrerica would be even more strategically stupid than cruel so I don't know why you jumped to that conclusion. Maybe you are projecting the American tradition of imposing collective punishment on civilians as they do in cases of their interventions and economic sanction. Unless you want just to fantasise about Muslim hordes in which case you read it however you want.