Iran's Islamic Revolutionary Guard Corps issued a statement via the state-run Press TV claiming that the U.S.' room for decision-making "has narrowed" amid the ongoing negotiating stalemate.

In its statement, the IRGC claimed that Tehran has set the Pentagon a deadline to lift its blockade of Iranian ports. It also claimed that the global tone of conversation on the conflict has shifted "against Washington," citing critical statements on the war from China, Russia and Europe.

President Donald Trump, the IRGC said, must choose between "an impossible military operation or a bad deal" with Iran.

-ABC News' Dragana Jovanovic

Mohsen Rezaee, the top military adviser to Iran's Supreme Leader Mojtaba Khamenei, said in a post to X on Sunday that Tehran is prepared to create a "graveyard" of American military vessels if fighting resumes.

"The U.S. is the only pirate in the world that possesses aircraft carriers. Our ability to confront pirates is no less than our ability to sink warships," Rezaee wrote.

"Prepare to face a graveyard of your carriers and forces, just as the wreckage of your aircraft was left behind in Isfahan," Rezaee added, referring to the U.S. aircraft lost in the operation to recover a downed F-15 crewmember inside Iran in April.

Israel Defense Forces spokesperson Avichay Adraee on Sunday ordered the residents of 11 Lebanese towns and villages to immediately evacuate their homes, saying the IDF was planning to act "forcefully" against alleged Hezbollah targets in the affected areas.

Adraee said residents of Al-Duwayr, Arab Salim, Al-Sharqiya, Jibshit, Braashit, Sarafand, Dounin, Briqa, Qaaqaiya Al-Jisr, Al-Qasiba and Kafra Sir should leave the settlements until further notice.

More than 1 million people have been internationally displaced in Lebanon by Israeli airstrikes, ground operations and evacuation orders, according to recent United Nations data.

The Israel Defense Forces said in a post to X on Saturday that it struck 120 alleged Hezbollah targets in southern Lebanon during weekend attacks, among which it claimed were 70 military-use structures and around 50 other infrastructure targets.

In a statement posted to Telegram on Saturday, Hezbollah claimed five new attacks on Israeli forces in southern Lebanon.

The U.S. has approved $8.6 billion worth of arms for Kuwait, the UAE, Qatar and Israel -- sidestepping Congress by invoking emergency powers, according to notices published by the State Department.

The State Department notified Congress it was using its authorities for the sales, including $4 billion worth of Patriot missile interceptors for Qatar.

Since the outset of the war in Iran, the administration has used the authority for billions of dollars' worth of sales to the UAE, Israel and Kuwait.

Rep. Gregory Meeks, D-N.Y., the ranking member of the House Foreign Affairs Committee, said the administration was "using the veneer of an emergency declaration to push through sales with no urgent nexus to current conflicts."

-ABC News' Chris Boccia