Videos on social media showed his supporters dancing in towns and cities nationwide, with motorists honking car horns to celebrate.Mr Pezeshkian might also meet resistance from the Iranian government, which is still largely held by hardliners. The election also came amid heightened regional tensions. In April, Iran launched its first-ever direct attack on Israel over the war in Gaza, while militia groups that Tehran arms in the region - such as the Lebanese Hezbollah and Yemen's Houthi rebels - are engaged in the fighting and have escalated their attacks.