The assessment is in line with testimony from the Defense Intelligence Agency.
President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israeli strikes targeting military, government and infrastructure sites.
Following the announcement of a two-week ceasefire, initial U.S.-Iran talks in Pakistan in April failed to reach a peace deal.
Trump later announced the open-ended extension of the ceasefire and the continuation of a U.S. blockade until negotiations are concluded "one way or the other."
Pakistan's interior minister Mohsin Naqvi arrived in Tehran Saturday for a two-day official visit, meeting with his Iranian counterpart.
The Iranian semi-official news agency reported that the diplomacy is part of Pakistan's continued efforts to facilitate peace talks between the United States and Iran that have stalled.
-ABC News' Claire Bower
The IDF said that they have killed Izz al-Din al-Haddad, Head of Hamas' military wing and "one of the last senior Hamas leaders involved in planning the October 7th massacre."
"Haddad assumed his role following the elimination of Mohammed Sinwar, and over the recent period, worked to rebuild the capabilities of the terrorist organization's military wing and to plan numerous terror attacks against Israeli civilians and IDF troops," the IDF said in their statement.
The IDF said that Haddad was "involved in the holding of many Israeli hostages in Hamas captivity. Haddad managed Hamas' hostage captivity system and surrounded himself with hostages in an attempt to prevent his elimination."
"Haddad is one of the longest-serving commanders in Hamas, having joined the terrorist organization during its early establishment, and maintained close ties with Hamas leadership," the IDF said. "Haddad played a central role in Hamas' terrorist rule and held a number of senior positions, such as the commander of the Gaza City Brigade and commander of additional units."
-ABC News' Rashid Haddou
After two days of talks in Washington, D.C., Israel and Lebanon have extended their ceasefire for 45 days "to enable future progress" in negotiations, the State Department announced Friday.
The talks were "highly productive" and the next round of political negotiations would reconvene on June 2 and 3, spokesperson Tommy Pigott said.
He also announced that a second, security focused track for the talks would be launched through the Pentagon, starting on May 29 and featuring military delegations from both countries.
"We hope these discussions will advance lasting peace between the two countries, full recognition of each other's sovereignty and territorial integrity, and establishing genuine security along their shared border," Pigott said.
President Donald Trump said that Chinese President Xi Jinping wants to see a deal on Iran and "would love" to help the U.S., Trump told Fox News in an interview in China.
"President Xi would like to see a deal made. He would like to see a deal made. And he did offer, he said, if I can be of any help at all I would like to be of help," Trump told Fox News.
"He'd like to see the Hormuz Strait open. He said if I can be of any help whatsoever I would like to help," Trump said.
Trump said Jinping told him China will not give Iran military equipment.
"But at the same time he said they buy a lot of their oil there and they'd like to keep doing that," Trump said.
