China and Russia stood by Iran on Friday after the United States demanded nuclear talks with Tehran, with senior Chinese and Russian diplomats saying dialogue should only resume based on "mutual respect" and all sanctions ought to be lifted.

Beijing sought to position itself as a key player in negotiations with Iran over its nuclear program, as President Trump called for talks with Tehran.

China is hosting diplomats from Iran and Russia for talks on Iran’s nuclear program Friday as Beijing aims to position itself as a power broker on an issue seen internationally as a pressing security concern.