The following is the May 4, 2020 Congressional Research Service report, Nonstrategic Nuclear Weapons.
These weapons, often referred to as nonstrategic nuclear weapons, have not been limited by past U.S.-Russian arms control agreements.
During the Cold War, the United States and Soviet Union both deployed nonstrategic nuclear weapons for use in the field during a conflict.
While there are several ways to distinguish between strategic and nonstrategic nuclear weapons, most analysts consider nonstrategic weapons to be shorter-range delivery systems with lower-yield warheads that might attack troops or facilities on the battlefield.
Analysts have identified a number of issues with the continued deployment of U.S. and Russian nonstrategic nuclear weapons.