As the war in Iran enters its fourth week, the trajectory still points towards escalation. More than 150 people have been injured in Iranian missile strikes on the southern Israeli

As the war in Iran enters its fourth week, the trajectory still points towards escalation. More than 150 people have been injured in Iranian missile strikes on the southern Israeli cities of Arad and Dimona, and Trump has issued an ultimatum to Iran. Sky's @sallylockwood reports.