Tehran said American bases in the Middle East could face reprisals if the U.S. helped repel Iranian attacks on Israel.

Sir Keir Starmer has said RAF jets and military assets are being sent to the Middle East. It comes after Iran warned the UK, US and France their bases in the region will be targeted if they help Israel stop Tehran's strikes.

The Lebanese militant group Hezbollah was long considered Iran’s first line of defense in case of a war with Israel.

Israel began Operation Rising Lion to degrade Iran's nuclear facilities and aerial capabilities, and take out top military leaders.

The conflict between Israel and Iran has shaped the Middle East for decades. It was largely on a low boil as the two sides attacked each other — mostly quietly and in Iran’s case often by proxy — while avoiding a full-blown war.

The Israeli military warned Iranians living near nuclear reactors to evacuate, while Prime Minister Benjamin Netanyahu said the attacks by Israel so far were nothing compared with what Iran would see in the coming days.

The Lebanese militant group Hezbollah was long considered Iran’s first line of defense in case of a war with Israel

President Donald Trump made a scathing threat to Iran that it would face retaliation from the U.S. military "at levels never seen before" if it carried out an attack on forces or land in a post shared on his Truth Social account early Sunday (June 15) morning.