The failure to reach a deal throws ceasefire into doubt and raises questions about reopening the Strait of Hormuz. Follow for live updates.

U.S. Vice President JD Vance says negotiations between the United States and Iran ended without a peace deal after the Iranians refused to accept American terms to not develop a nuclear weapon.

Iran's Revolutionary Guards said on Sunday that any military vessels attempting to approach the Strait of Hormuz will be considered a violation of the two-week U.S.

Entering this weekend’s high-stakes talks in Pakistan, US officials identified a number of key areas where they would need to see progress in order to declare success.

Two Navy guided-missile destroyers entered the Strait of Hormuz on Saturday, the first American warships to transit the strait since the U.S.-Israel offensive in Iran began on Feb. 28. USS Frank E. Peterson (DDG-121) and USS Michael Murphy (DDG-112) are now in the Persian Gulf after transiting the strait as part of the U.

In today’s newsletter: Only a handful of ships have passed through the Strait of Hormuz since the ceasefire deal was announced.

Reopening the Strait of Hormuz is proving to be difficult. But even if the vital waterway fully opens and oil and other necessary cargo sail out, it won’t be enough to return things to normal.