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Israel has attacked Iran, and its operation will continue for "as many days as it takes", according to Benjamin Netanyahu. Iran's leader, meanwhile, has vowed "severe punishment" in return.

In this extra episode of The World, Yalda Hakim is joined by Sky News's international affairs editor Dominic Waghorn to ask why Israel decided to launch these attacks now and whether this is the start of something much bigger.

He's standing in for Richard - who is on his way to the Middle East.

Yalda reveals what she's hearing from Mossad agents in Israel, and Dominic - who has just returned from Iran - explains why the leaders there are boxed in a corner.

Also, Yalda and Dominic discuss whether the initial response from the rest of the world will hold. Can Donald Trump stay out of any escalation? And what does it mean for the UK?

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