US Vice-President JD Vance on Sunday said he remained in constant touch with President Donald Trump throughout the high-stakes negotiations with Iran, revealing the intensity and real-time coordination behind Washington’s diplomatic push.Responding to a question on the frequency of his communication with Trump, Vance said the engagement was continuous during the nearly day-long talks. “We were talking to the President consistently. I don’t know the exact number—perhaps half a dozen times, maybe a dozen over the past 21 hours,” he said.The Vice-President underscored that the negotiations were closely guided by the broader US national security establishment, with multiple senior officials looped in at every stage.He confirmed consultations with key figures, including Admiral Cooper, Defence Secretary Pete Hegseth, Secretary of State Marco Rubio and Treasury Secretary Scott Bessent.“We were constantly in communication with the entire national security team because we were negotiating in good faith,” Vance said, signalling a coordinated and unified US approach during the talks.Despite the intense back-and-forth, the negotiations ended without a final agreement. Vance reiterated that Washington had placed a clear proposal on the table before departing.“We leave here with a very simple proposal—a method of understanding that is our final and best offer,” he said. “We’ll see if the Iranians accept it.”The remarks offer a glimpse into the high-level decision-making that shaped the negotiations, even as uncertainty looms over whether Tehran will respond to what Washington has described as its final terms.