June 26 (UPI) — President Donald Trump on Friday afternoon ordered strikes against Iran after it staged a drone strike on a shipping vessel transiting the Strait of Hormuz.

President Donald Trump said Friday that Iran has attacked ships in the Strait of Hormuz and that it’s a violation of the cease-fire between the United States and Iran.

Trump called the strikes a “foolish violation” of the current cease-fire, The New York Times reported, noting that American officials characterized the strikes as retaliatory, rather than a return to war and canceling of the peace plan that was recently agreed to.

A cargo ship in the strait was attacked Thursday, but it’s unclear if this is the attack about which the president was speaking.

“The Islamic Republic of Iran shot at least four One Way Attack Drones at Ships transversing the Strait of Hormuz. One of the Drones solidly hit the upper deck of a large and very expensive Cargo Carrying Ship. Damage was done, but the Ship was able to proceed on its way. We knocked down three other Drones. Obviously, this is a foolish violation of our Ceasefire Agreement. President DONALD J. TRUMP,” the post on Truth Social said.

Trump did not address the negotiations with Iran.

Iranian Deputy Foreign Minister Kazem Gharibabadi posted a statement on X Friday emphasizing Iran’s control of the strait.

“Safe passage through the Strait of Hormuz, with ambiguous arrangements, parallel routes, or decision-making outside of Iran’s considerations as the coastal state, cannot be guaranteed. Any credible framework must be based on coordination with Iran and the provisions of paragraph five of the Islamabad Memorandum of Understanding. Otherwise, the outcome will be the suspension of the designated parallel route,” the post said.

The memorandum of understanding that Trump and Iran’s president signed on June 17 established the cease-fire and opened passage through the strait. In the fifth paragraph, it said Iran will use its “best efforts” to ensure the safe passage of commercial vessels with no charge for 60 days, The Hill reported.

On Thursday, the United States issued a joint statement with the Gulf Cooperation Council saying that “free, unconditional, and unrestricted navigation” through the strait is guaranteed under international law.

“The Ministers rejected any tolls, fees, or attempts to assert control over the strait,” the statement said. The council includes Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the United Arab Emirates.