The fragile ceasefire agreement was tested again on Friday after Iran refused to reopen the Strait of Hormuz. Israel and Hezbollah traded strikes in Lebanon, and Kuwait was attacked with drones.

Senior Middle East advisor warns Iran could use Houthi proxies to blockade the Bab al-Mandeb strait if the U.S. blocks the Strait of Hormuz.

U.S. Central Command has announced that it will begin a blockade of Iranian ports on Monday at 10 a.m. ET. CENTCOM said the blockade would be “enforced impartially against vessels of all nations” entering or departing Iranian ports and coastal areas.

The U.S. and Iran were to hold negotiations in the Pakistani ⁠capital ⁠Islamabad on Saturday to end their six-week-old war, although Tehran threw ⁠the talks into doubt by saying they could not begin without commitments on Lebanon and sanctions.