President Donald Trump is saying that Iran "better get moving, FAST," warning that "there won't be anything left of them" if they do not comply with his demands and make a peace deal.

"For Iran, the Clock is Ticking, and they better get moving, FAST, or there won’t be anything left of them. TIME IS OF THE ESSENCE!," Trump wrote on his social media platform early Sunday afternoon.

The president did not provide a new deadline or timeline for Iran's response, as he has previously.

During an interview in China with Fox News that aired Thursday night, Trump warned that Iran “can make a deal or they get annihilated.”

Last week, Trump called the ceasefire with Iran "unbelievably weak" and "a piece of garbage" after he disapproved of their peace deal proposal response.

-ABC News' Emily Chang

President Donald Trump's top trade envoy said Sunday that the U.S. president exacted a commitment from the Chinese to not "provide material support to Iran," but that the United States did not seek China's direct help to reopen the Strait of Hormuz.

"When the president went in, he did not go in asking them to take action in the Straits of Hormuz. He was very focused on making sure that they didn't provide material support to Iran. That's a commitment he obtained and confirmed," U.S. Trade Representative Jamieson Greer said on ABC News' "This Week."

Greer said China has "a clear interest" in reopening the strait -- "I was in these meetings, and that's what, that's what the Chinese said," he said -- but without getting involved directly, it's unclear whether China's position will do anything to pressure Iran.

"The president isn't seeking to have joint military operations with the Chinese. I don't think the American presidents have ever done that," Greer said. "But obviously we want to make sure that they're not getting in the way of anything we're doing to try to clarify that situation."

-ABC News' Quinn Scanlan

A drone attack caused a fire in an electrical generator at a nuclear power plant in the United Arab Emirates, officials in Abu Dhabi said on Sunday.

The generator was "outside the inner perimeter" of the Barakah Nuclear Power Plant in the Al Dhafra Region, the Abu Dhabi Media Office said on social media.

"The Federal Authority for Nuclear Regulation (FANR) confirmed that the fire did not affect the safety of the power plant or the readiness of its essential systems, and that all units are operating as normal," officials said.

-ABC News' Mike Trew

The Israeli Air Force intercepted several rockets launched by Hezbollah toward Israeli soldiers operating in southern Lebanon, the Israel Defense Forces said.

There were no IDF injuries reported.

-ABC News' Dorit Long

The Senate did not pass an Iran War Powers Resolution introduced by Sen. Jeff Merkley, D-Ore., on Wednesday, marking the seventh time the Senate has failed to advance such a resolution in a vote of 49-50.

Another Republican has joined Democrats in voting to discharge the war powers resolution: Sen. Lisa Murkowski, R-Alaska. She joined Republican Sen. Rand Paul, R-Ky., and Sen. Susan Collins, R-Maine, along with all Democrats except Sen. John Fetterman, D-Penn., who once again voted with Republicans to block the resolution from advancing.

It comes as White House administration officials argue that the war in Iran is over given the April 8 ceasefire agreement, that President Donald Trump admitted was on massive life support, and congressional authorization is no longer necessary.

No Congress has ever used the War Powers Resolution to force the executive branch to end hostilities, so while these efforts will continue, they face uphill battles. Another avenue comes from Murkowski who has been working on an authorization for use of military force (AUMF) for weeks to kickstart the process on consideration over whether Congress should formally approve of military action against Iran.

Yet still, Republicans refusing to break with Trump appear to have little appetite for that method as well with Senate Majority Leader John Thune arguing earlier this week an AUMF is not necessary.

“I don't think it's necessary at the moment, offensive measures have been suspended now there for about a month…I don't think there will probably be a lot of support for an AUMF right now,” Thune said on Monday.

-ABC News' Lalee Ibssa and Allison Pecorin