re: #219 Kilroy was here
Yah, but it is just an upgrade to their RT-2PM Topol which was first deployed in 1985.
And the M1A3 is an upgrade of the M1 tank that was introduced in 1980. The Army is still carrying around M16s and M4s decades after both were introduced into service. We rely upon Minuteman III missiles that were first deployed in 1970.