The conflict, rooted in last year's Israel-Iran skirmishes and stalled nuclear negotiations, has drawn in significant U.S. forces, with opposition groups like the Mujahedin-e Khalq (MEK) playing a pivotal role in internal disruptions. The United States and Israel escalated their joint military campaign in the Iran War on Saturday, launching airstrikes on Iranian military and nuclear sites amid retaliatory missile and drone attacks from Tehran.