If we are lucky, we will be left with a far-less-resilient "Dyad" equipped with obsolescing, untested weapons.

CENTERFORSECURITYPOLICY: Putin's reset

Robert Kehler of U.S. Strategic Command also stated recently that the United States may decide to move from a "triad" of nuclear delivery vehicles (submarines, bombers, and inter-continental ballistic missiles) to a "dyad" of only two types of delivery vehicles.

CENTERFORSECURITYPOLICY: Center For Security Policy