D ays after the United States and Israel killed Iran’s leader, the war is set to enter a dramatic new phase. Thousands of Iranian Kurdish militants are gathering in Iraqi Kurdistan, set to receive American and Israeli financial and military support to launch a major attack on Iranian territory, according to several people with close knowledge of the plan . Other armed militants, such as the Mojahedin-e-Khalq (MEK), an exiled opposition group that has long carried out violent operations inside