Iran's Islamic Revolutionary Guard Corps issued a new warning to all vessels intending to transit in the strait, saying "the only safe route to pass through the Strait of Hormuz is the corridor previously announced by Iran," in a statement Tuesday.

"The diversion of vessels to other routes is unsafe and will face a decisive response from the IRGC Navy," the IRGC said.

President Donald Trump suggested that Iran hasn’t yet violated the ceasefire despite firing shots in the Strait of Hormuz, saying “I’ll let you know” when it is breached.

"They didn't shoot the ships that were guarded by us," Trump said during an Oval Office event on Tuesday.

"The blockade has been amazing. It's like a piece of steel. Nobody is going to challenge a blockade," Trump said.

-ABC News' Emily Chang and Isabella Murray

Air defenses in the United Arab Emirates are dealing with projectiles launched from Iran, the Ministry of Defense said in a post on X Tuesday. It is unclear how many projectiles are involved.

"The Ministry of Defense confirms that the sounds heard in scattered areas of the country are the result of the UAE's air defense systems intercepting ballistic missiles, cruise missiles, and drones," the ministry said.

This comes after the UAE's Ministry of Defense said 15 missiles and four drones launched from Iran were engaged on Monday.

Defense Secretary Pete Hegseth told reporters that Iran does not control the Strait of Hormuz.

"They said they control the strait. They do not," Hegseth said.

"Iran has an ability to make that deal, but what we're demonstrating with Project Freedom is they don't control the strait. We know Iran is embarrassed by the fact that our blockade is holding, and we can run ships through, and we're going to help the world run ships through," Hegseth said Tuesday.

The U.S. and Iran are negotiating over a memorandum of understanding (MoU) aimed at breaking through the standoff in the Strait of Hormuz and setting a timeline for both sides to work out a more comprehensive nuclear deal.

The one-page MoU currently on the table from the Trump administration would see Iran easing its grip on the Strait of Hormuz and the U.S. gradually lifting its naval blockade of the country's ports over a 30-day period, according to officials familiar with the matter.

Officials underscore that nothing has been formally agreed to at this point and that some issues -- including ones related to Iran's ongoing demands to charge a toll for transiting the strategic waterway -- still need to be resolved.

Iranian and US negotiators have passed multiple draft versions of the MoU back and forth in recent days, and the administration is currently waiting for feedback from Iran on several points, they say.

In its current form, the one-page MoU does contain terms related to Iran's nuclear program, but the expectation is that most of the specifics would be negotiated over the 30-day period.

Officials have so far declined to describe the proposed MoU as a take-it-or-leave-it offer.

-ABC News' Rachel Scott and Shannon K. Kingston