: The United States and Iran reportedly agreed to an "in principle agreement" to extend their two-week ceasefire, which is set to expire on April 22, to provide additional time for diplomacy, AP reported on April 15, citing unnamed regional officials. The United States and Iran could resume peace negotiations in Pakistan later in the week, despite the U.S. blockade of Iranian ports, in effect since April 13, aimed at increasing economic pressure on Iran after the failed April 11 talks.

U.S. Central Command said on April 14 that six merchant vessels had complied with U.S. commands to turn around in the Strait of Hormuz, though more than 20 commercial vessels successfully transited the strait within the first 24 hours of the blockade. Iranian Gen. Ali Abdollahi said if the U.S. blockade persists, it would "constitute a prelude to a violation of the ceasefire" and Iran would block trade in the Red Sea, the Gulf of Oman and the Persian Gulf. The USS George H.W. Bush and 6,000 troops are expected to arrive in the Middle East within days, and an additional 4,200 troops are expected by the end of April with the USS Boxer Amphibious Ready Group and additional military support.