U.S. President Donald Trump on Monday warned Iran of new strikes and said Hamas would have “hell to pay" if it refuses to disarm in Gaza, after a meeting with Israeli Prime Minister Benjamin Netanyahu.

Speaking at a news conference with Netanyahu in Florida, Trump threatened to "eradicate" any attempt by Tehran to rebuild its nuclear program or ballistic missile arsenal following U.S. and Israeli strikes earlier this year.

Trump also downplayed reports of tensions with Netanyahu over the second stage of the fragile Gaza cease-fire, saying that Israel had "lived up" to its commitments and that the onus was on the Palestinian resistance group Hamas.

"If they don't disarm as they agreed to do, then there will be hell to pay for them," Trump told reporters at his lavish Mar-a-Lago resort. "They have to disarm in a fairly short period of time."

Hamas' armed wing reiterated earlier Monday that it would not surrender its weapons.