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.

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.

Group of Seven foreign ministers met on Friday in France to discuss the Russia-Ukraine conflict, with deep divisions apparent over the U.S.-Israeli war with Iran, following U.S. President Donald Trump's repeated complaints that America's allies have ignored or rejected requests for help in the military operation and in confronting Iran's retaliatory attacks, including the closure of the Strait of Hormuz to most international shipping.

U.S. Secretary of State Marco Rubio joined his counterparts from the G7 just 24 hours after Trump's latest round of insults lobbed at NATO and as instability in oil markets persisted with the Iran war entering its fourth week along with uncertainty over the status of potential negotiations to end the crisis.

U.S. President Donald Trump said Thursday he would not yet strike Iranian power plants as previously threatened after a request from the government in Tehran, and added that talks with the Islamic republic were "going very well."

U.S. President Donald Trump denied Thursday he was desperate for a deal to end the Middle East war, insisting that Tehran was keen to come to the table despite the Islamic republic's cool response to an American peace plan.