ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance boards Air Force Two following a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)

ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance waves as he boards Air Force Two following a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)

ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance waves as he boards Air Force Two following a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)

ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance gestures as he boards Air Force Two following a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)

ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance speaks as Jared Kushner (C) and Steve Witkoff, Special Envoy for Peace Missions, listen during a news conference after a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)

ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance speaks as Jared Kushner (L) and Steve Witkoff, Special Envoy for Peace Missions, react during a news conference after a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)

ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance speaks as Jared Kushner (L) and Steve Witkoff, Special Envoy for Peace Missions, listen during a news conference after a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)

ISLAMABAD, PAKISTAN - APRIL 12: U.S. Vice President JD Vance speaks during a news conference after a meeting with representatives from Pakistan and Iran on April 12, 2026 in Islamabad, Pakistan. The proposed meeting marks a rare direct engagement between senior U.S. and Iranian officials, as Washington and Tehran seek to advance stalled negotiations over Iran's nuclear programme, with Pakistan serving as neutral ground amid persistent tensions between the two countries. (Photo by Jacquelyn Martin - Pool/Getty Images)