Iranian armed forces say they carry out attacks on U.S. military infrastructure in neighboring Gulf states on Thursday, citing U.S. strikes against Iranian provinces along the south coast and in the east earlier in the day. The actions are reported as increasing pressure on a three-week-old ceasefire agreement between the two sides. The U.S. military says its latest strikes on Iran are aimed at keeping the Strait of Hormuz open, after it said Iranian forces struck three tankers in the area.

Separate reporting describes Iran preparing to bury its slain Supreme Leader Ayatollah Ali Khamenei, with mass funeral processions and rallies taking place across the country. One report adds that Iran’s air force is flying MiG-29 jets to help secure airspace over the funeral procession in Mashhad, in the northeast, where Khamenei is expected to be buried.

Oil prices briefly spike amid renewed attacks and concerns about global supplies, but then fall back as markets assess whether the flare-up remains limited or signals a broader breakdown of the ceasefire.