Kim jongun personally supervising the launch of a Ballistic Missile from a submarine. The move sparking new anxiety coming on the heels of a series of defiant nuclear tests. Is north korea now capable of a Nuclear Strike on the United States . And purple pain. New details of princes last days and questions about whether he was in excruciating pain and possibly taking prescription drugs that may have been involved in his death. Tonight, new details of his Emergency Landing and trip to the hospital just days before he died. What caused his medical emergency. Im wolf blitzer. Youre in the situation room. Dramatic news twists in the wildly unpredictable republican race for the white house. Just ahead, five key primaries tomorrow. John kasich and ted cruz joining forces to keep frontrunner donald trump from getting the number of delegates he needs to secure the gop nomination. Their plan, divide their efforts in upcoming primary elections with cruz focusing in on indiana and kasich on orego