Israel said it had bombed Houthi targets in Yemen on Sunday, expanding its confrontation with Iran's allies in the region after killing the Hezbollah leader Sayyed Hassan Nasrallah
Iran has vowed to "harshly punish" Israel over the assassination.
Abbas Araghchi is a seasoned pragmatist diplomat who was the chief negotiator in nuclear talks between Tehran and world powers from 2013 to 2021.
"I am certain that the resistance movements in the region will not allow this regime to continue its warmongering and criminal policies against the oppressed people of Palestine and other nations of the region," Iranian media quoted Pezeshkian as saying.
A triumph by Masoud might promote a pragmatic foreign policy, ease tensions over now-stalled negotiations with major powers to revive a 2015 nuclear deal, and improve prospects for social liberalisation and political pluralism, analysts said.