US Vice President JD Vance has expressed concern at a meeting at the White House about a possible escalation of the military conflict with Iran, CNN quoted sources as saying. It reported that on Friday, at a meeting with the participation of US President Donald Trump, Vance and General Dan Caine, the chairman of the Joint Chiefs of Staff voiced their concern about a potential escalation of the conflict. According to CNN, the Persian Gulf countries appealed to the US administration to demonstrate restraint. Earlier, Trump said he was considering resuming full-scale hostilities against Iran and carrying out a "massive attack" on the Islamic Republic. Later, The New York Times reported, citing sources, that he decided to postpone escalation of the conflict.