Trump calls Iran's latest response to proposal 'TOTALLY UNACCEPTABLE'

Iranian Supreme Leader Mojtaba Khamenei met the head of Iran's armed forces and briefed the military chief on "new guiding measures to pursue military operations and firmly confront adversaries," according to a report by Iran's semi-official news agency Fars on Sunday.

The report did not state when the meeting occurred. Khamenei has not been seen in public since he was appointed supreme leader in March, succeeding his father -- Ali Khamenei -- who was killed in the opening hours of the U.S.-Israeli war with Iran.

Fars said that Ali Abdollahi -- who commands the Khatam al-Anbiya Central Headquarters -- briefed Khamenei on the readiness of Iran's armed forces.

Abdollahi told Khamenei that Iranian forces are "highly prepared in terms of combat morale, defense and offensive readiness" and would deal with any aggression "swiftly, intensely and powerfully," Fars reported.

-ABC News' Claire Bower

Iranian state media reported on Sunday that Tehran had sent its response to the U.S.-proposed text outlining a possible end to the ongoing war.

IRNA said the response was sent via Pakistani mediators.

-ABC News' Rashid Haddou-Riffi

The United Arab Emirates' Defense Ministry said that its air defenses intercepted two drones "coming from Iran" on Sunday.

"Since the start of Iran's blatant attacks, UAE air defenses have intercepted 551 ballistic missiles and 29 cruise missiles," the ministry said in a statement posted to X.

Kuwait's Defense Ministry spokesperson, Brig. Gen. Saud Abdulaziz Al-Otaibi, said in a statement on Sunday that the country's armed forces detected and "dealt with" several "hostile drones within Kuwaiti airspace."

The incident occurred at dawn on Sunday, Otaibi said in a statement published on X by Kuwait's armed forces.