What are tactical nuclear weapons? An international security expert explains and assesses what they mean for the war in Ukraine
This Russian short-range cruise missile, the Iskander-K, can carry nuclear warheads for several hundred miles. Russian Defense Ministry Press Service photo via AP Nina Srinivasan Rathbun, USC Dornsife College of Letters, Arts and Sciences Tactical nuclear weapons have burst onto the international stage as Russian President Vladimir Putin, facing battlefield losses in eastern