Iran says that conflict will spread in coming days to US bases in the region

Iran warned Wednesday that it would target U.S. military bases in the region if hostilities break out, as President Donald Trump admitted he was "less confident" about the prospects of reaching a nuclear agreement.

As tensions continued to escalate, a U.S. official confirmed that staffing at the American embassy in Iraq was being reduced due to security concerns. Meanwhile, the UK Maritime Trade Operations — a British navy-run agency — advised vessels to navigate the Gulf with caution.