The earthquake and tsunami damaged cooling systems at all six nuclear reactors there.

VOA: special.2011.05.24

The ceiling on warheads is 6,000 and the ceiling on strategic nuclear delivery systems is 1,600,".

VOA: standard.2009.04.08

"The new treaty that the U.S.and Russia are now negotiating would drop these levels even lower to somewhere between 1,500 and 1,675 deployed strategic warheads and somewhere probably below 800 strategic nuclear delivery systems,"

VOA: standard.2009.12.07

Strategic nuclear systems comprise a mere 13 per cent of the overall defense budget.

CENTERFORSECURITYPOLICY: Roundtable Discussion On The B-2 Bomber

The law stipulates that these tests can only be conducted for certain purposes, namely, to improve the safety of certain deployed nuclear weapon systems.

CENTERFORSECURITYPOLICY: Center for Security Policy | Testing, Testing: Is The Clinton Administration Determined To Gut The US Nuclear Deterrent?

In the negotiating end-game on START II, however, the United States agreed to such inspections in connection with new limitations governing the accountability of long-range bombers as nuclear delivery systems.

CENTERFORSECURITYPOLICY: Center for Security Policy | When Will We Ever Learn? Last Bush Foreign Policy Paroxysm Produces Flawed Start Ii Accord �� For Wrong Reasons