Pakistani Foreign Minister Ishaq Dar made the announcement on Sunday.
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.
Ayatollah Ali Khamenei was among those killed in Tehran on the first day of strikes, with his son Mojtaba Khamenei later chosen to succeed him. Iran has responded with missile and drone attacks targeting Israel, regional U.S. bases and multiple Gulf nations. Iran is also attempting to block some shipping traffic through the Strait of Hormuz.
Israel is also intensifying its long-running strike campaign against the Iran-backed Hezbollah militia in Lebanon and expanding its ground operations in the south of the country.
Watch special coverage on Nightline, "War with Iran," each night on ABC and streaming on Disney+ and Hulu.
The U.S. has struck more than 9,000 targets in Iran since the start of Operation Epic Fury, according to U.S. Central Command.
More than 140 Iranian ships have been damaged or destroyed, it said in an update Monday.
Israeli Prime Minister Benjamin Netanyahu said he spoke to President Donald Trump earlier Monday about the war in Iran.
"President Trump believes there is an opportunity to leverage the tremendous achievements we have attained with the U.S. military to realize the war's objectives in an agreement -- an agreement that will safeguard our vital interests," Netanyahu said in a video message.
Israel continues to strike Iran and Lebanon, he said, adding, "We are crushing the missile program and the nuclear program, and continue to inflict severe blows on Hezbollah."
More than 2,100 children have been killed or injured across the Middle East since the war in Iran began, according to UNICEF.
The fatalities include 206 children in Iran, 118 in Lebanon, four in Israel and one in Kuwait, according to UNICEF.
"These are reported figures, and they are expected to rise as the violence continues," UNICEF said in a release. "That is an average of approximately 87 children either killed or injured every day since the beginning of the war."
At least 10 people have been killed and another 90 wounded in Lebanon over the past 24 hours, the Lebanese Ministry of Public Health said Monday.
Overall, at least 1,039 people have been killed and another 2,876 wounded since March 2, according to the ministry.
