The United States says it'll take all necessary actions to defend itself, its interests, and its people in the middle east.  

It comes after three US soldiers were killed in a drone strike in Jordan, near the Syrian border.  

The US has blamed an Iranian-backed militia group.  

CBS says officials have told them the US has approved plans for a series of strikes on Iranian targets in Syria and Iraq.  

US correspondent Richard Arnold told Mike Hosking that they're still finalising plans, and it's expected there'll be a series of strikes over a number of days including on Iranian personnel and facilities inside Iraq and Syria. 

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