Videos geolocated by CNN show people celebrating in the streets of Iran overnight after the announcement of Supreme Leader Ayatollah Ali Khamenei's death. Anti-regime activist accounts shared footage of spontaneous gatherings across multiple cities, marking a dramatic shift in the country's political landscape.

The death of Khamenei, who has ruled Iran since 1989, creates immediate uncertainty in global energy markets. Oil prices could jump by $10 to $20 or more following US and Israeli air strikes on Saturday, according to OPEC+ production data. The strikes triggered immediate retaliation, raising fears of escalating conflict in the region.

With Iran's supreme leadership now vacant, questions mount about who will succeed Khamenei and how this will affect Tehran's foreign policy. The combination of leadership transition and military tensions creates a volatile situation that could significantly impact global oil supplies and regional stability in the coming days.