Ash Carter: “The Ohio Replacement Program is a vital component of our nuclear deterrence strategy.”

It absolutely is. That's why we quadrupled the European Reassurance Initiative.

I can't support, and won't support, is anything that moves towards instability.

China has and shares important responsibility for this development and has an important responsibility to reverse it.

The international community, United Nations Security Council and especially the other six-party powers must hold North Korea accountable for this latest act and heighten the pressure on North Korea.