Two U.S. jets and two helicopters were hit by Iranian fire on Friday.
President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israeli strikes attack targeting military and government sites, officials said.
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Iran will not accept a ceasefire without "suitable guarantees," a Pakistani security official told ABC News on Monday.
"Any process for a ceasefire without suitable guarantees and assurances would be unacceptable to Iran," the official said, responding to reports that mediators are pushing for a ceasefire to halt the U.S.-Israel war against Iran.
Iranian Foreign Ministry spokesperson Esmaeil Baghaei said on Monday that a 15-point peace plan proposed by the U.S. to end the current conflict is unacceptable to Tehran.
Answering a question from the state-run news agency IRNA about reports of a new ceasefire plan during his weekly presser, Baghaei said, "A few days ago, they put forward proposals through intermediaries, and the 15-point U.S. plan was reflected through Pakistan and some other friendly countries."
"Right then we stated that such proposals are both extremely ambitious, unusual and illogical and not acceptable to us in any way," he said.
"Regardless of that proposal, we prepared the set of demands that we had and have based on our own interests and our own considerations," Baghaei said.
The Islamic Revolutionary Guard Corps Naval Command said in a post to X overnight that the Strait of Hormuz "will never return to its former state, especially for America and Israel."
"The navy of the IRGC is in the process of completing the operational preparations for the announced plan of Iran's officials for the new order in the Persian Gulf," the statement said.
The Islamic Revolutionary Guard Corps' chief of intelligence, Majid Khademi, was killed in an attack overnight, the IRGC's public relations arm confirmed in a statement on Monday.
The IRGC statement blamed the "American-Israeli enemy" for Khademi's killing.
Khademi had been recently appointed to the role, replacing the previous intelligence chief -- Mohammad Kazemi -- who was killed in an Israeli attack in June during the 12-day war.
Israeli Defense Minister Israel Katz said in a statement on Monday that Israel was responsible for the assassination. Khademi, Katz said, was "directly responsible" for "war crimes and one of the three most senior figures" in the IRGC.
In a post to X, the Israel Defense Forces said Khademi was "one of the IRGC's most senior commanders and had accumulated extensive experience over many years."
