JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance walks towards reporters as he disembarks Marine Two as he arrives on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)

JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance disembarks Marine Two as he arrives on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)

JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance speaks to reporters as he arrives on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)

JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance speaks to reporters as he arrives on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)

JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance speaks to reporters as he arrives on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)

JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance and second lady Usha Vance depart aboard a Gulfstream C-37, operating as Air Force Two, en route to Zurich, Switzerland on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)

JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance boards a Gulfstream C-37, operating as Air Force Two, en route to Zurich, Switzerland on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)

JOINT BASE ANDREWS, MARYLAND - JUNE 20: U.S. Vice President J.D. Vance and second lady Usha Vance depart aboard a Gulfstream C-37, operating as Air Force Two, en route to Zurich, Switzerland on June 20, 2026 at Joint Base Andrews, Maryland. Vance is heading to Switzerland for negotiations with Iran to end the war that have been delayed by Israeli strikes in Lebanon and over the opening the Strait of Hormuz. (Photo by Elizabeth Frantz - Pool/Getty Images)