All night people in Israel have been braced for more rockets. Just before 01:00 the Israeli military announced that it was striking missile sites in Iran, and instructed residents to move closer to shelters. Four hours later the response came – with what felt like the largest barrage so far of this conflict.

The U.S. says it wasn't involved in the strikes on Iran, but three American officials told NBC News the U.S. is assisting in shooting down Iranian missiles and projectiles targeting Israel.