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

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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 risk of conflict is growing as Iran signals strikes on Israeli nuclear facilities despite ongoing nuclear talks.

Leaders of some of the world’s biggest economic powers arrive in the Canadian Rockies for a Group of 7 summit that's been shadowed by an escalating conflict between Israel and Iran and Trump's trade war.

It is the first time that Britain has advised against travel to any part of Israel since 2013, when the FCDO set up its dedicated travel advice pages. Starmer has not ruled out offering air support to defend Israel from Iranian attacks, as additional RAF fighter jets and other military aircraft were deployed to the Middle East.

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