The Institute for the Study of War (ISW) is an American nonprofit research group and think tank founded in 2007 by military historian Kimberly Kagan and headquartered in Washington, D.C. ISW provides research and analysis regarding issues of defense and foreign affairs. It has produced reports on the Syrian civil war, the War in Afghanistan, and the Iraq War, "focusing on military operations, enemy threats, and political trends in diverse conflict zones". ISW currently publishes daily updates on the 2022 Russian invasion of Ukraine as well as the Mahsa Amini protests in Iran and the Israel-Hamas War.