Tehran's approach appears to rest on a belief it can absorb strikes longer than its adversaries sustain pain and costs, writes BBC Persian's Amir Azimi.

Ukraine's president says Kyiv will only help if doing so does not deplete its own air defences.

The admission from the married Republican, Tony Gonzales, comes after a House panel launched an ethics investigation.

The Today programme host visited her colleagues in the office on Thursday, nearly five weeks since her mother disappeared.