Iran's parliament speaker, Mohammad Bagher Ghalibaf, said Sunday that the United States was plotting a ground attack despite publicly engaging in diplomatic efforts aimed at ending the war.

"The enemy publicly sends messages of negotiation and dialogue while secretly planning a ground attack," Ghalibaf said in a statement carried by the official IRNA news agency.

The Revolutionary Guard’s warning on Sunday said it would consider Israeli universities and branches of American universities in the region “legitimate targets,” state media reported.

Top diplomats from key regional powers were gathering in Pakistan on Sunday to discuss how to end the fighting in the Middle East, but there were few signs of progress as Israel and the U.S. kept up strikes on Iran, and Tehran responded by firing missiles and drones across the region.

Pakistan said foreign ministers from Saudi Arabia, Turkey and Egypt were participating in the talks in Islamabad. Pakistani Prime Minister Shehbaz Sharif said he and Iranian President Masoud Pezeshkian held "extensive discussions" on regional hostilities.

Iran has agreed to allow humanitarian aid and agricultural shipments through the Strait of Hormuz following a request from the United Nations.

Pakistan said Saturday Saudi Arabia, Turkey and Egypt will send their top diplomats to Islamabad for talks aimed at ending the Iran war.

More than two dozen U.S. troops have been wounded in Iranian attacks on Saudi Arabia's Prince Sultan Air Base in the past week, according to two people who have been briefed on the matter.

Iranian-backed Houthi rebels claimed a missile launch toward Israel early Saturday, their first since the war in the Middle East started. The Israeli military said it intercepted the projectile.

The war, now marking its one-month anniversary, erupted after the United States and Israel attacked Iran, which retaliated with strikes against Israel and neighboring Gulf Arab states. The conflict has upended global air travel, disrupted oil exports and caused fuel prices to soar. Iran's stranglehold on the Strait of Hormuz, a strategic waterway, has also exacerbated the economic fallout of the war.

U.S. President Trump's special envoy Steve Witkoff said Friday he believes Iran will hold talks with Washington "this week" to end the month-long war in the Middle East.

U.S. Secretary of State Marco Rubio told G7 foreign ministers on Friday that the war with Iran will continue for another two to four weeks, three sources with direct knowledge told U.S. news portal Axios.

U.S.-Israeli strikes hit a uranium processing facility in central Iran on Friday, the country's atomic energy organization said.