"The scare mongering about an attack on Iran continues. Bolton must be laughing his ass off how easy he can play the issue based on nothing. He simply counters any debunking of the alleged 'thread from Iran' by upping the ante. Yesterday a British general in Iraq denied that any such threat exists in the area of his responsibility:

“No – there’s been no increased threat from Iranian-backed forces in Iraq and Syria,” Maj. Gen. Christopher Ghika, deputy commander of Operation Inherent Resolve (OIR), the coalition responsible for counter-terrorist operations against ISIS in Iraq and Syria, said in a video briefing, according to the Guardian.
Today Bolton countered that by again raising the noise level around the imaginary threat:

The U.S. Embassy in Iraq says the State Department has ordered all non-essential, non-emergency government staff to leave the country right away amid escalating tensions with Iran.
The alert, published on the embassy's website on Wednesday, comes after Washington last week said it had detected new and urgent threats from Iran and its proxy forces in the region targeting Americans and American interests.

Bolton is for now achieving the results he wants. He systematically fills the public space with talk about the non-existing 'threat from Iran'. If that threat is established in the public mind by its constant repetition, it will be used for the usual false flag incident to justify to launch a war on Iran."