Iran warns of an "unprecedented" retaliation if Israel attacks, while President Trump describes the Middle East as a "dangerous place."

The Iranian attack, which Tehran said entailed hundreds of ballistic missiles, is the most forceful step yet by Tehran since Israel’s overnight raids killed top Iranian generals and badly damaged key military infrastructure.

Washington and Tehran have held five rounds of talks since April as Trump seeks an agreement that would place constraints on Iran’s uranium enrichment. He has threatened to attack Iran if no deal can be agreed. Defence Minister Aziz Nasirzadeh said on Wednesday that Iran would target US military bases in the region if the US attacked it first.