Governments across the Middle East are bracing for an escalation of violence after Iran claimed it had received intelligence that the US was preparing for a renewed bombing campaign against the Islamic Republic.

In a potential sign of growing tensions before the UN general assembly in New York this week, Donald Trump cut short a weekend visit to the Camp David presidential retreat on Sunday with no official explanation, and a new security alert was issued by the state department to all US citizens in the Middle East.

Keeping his options open, Trump reportedly told a Fox News reporter “very big things are going to be happening in the not-so-distant future” and that the options he was considering were “wiping Iran out, letting them rot economically or making a deal”.

The Islamic Revolutionary Guards Corps warned that if an attack does take place, “all US bases and interests in the region will become targets of continuous, effective and painful attacks without any limitations or considerations”.