Ash Carter: “It sends a signal to the world--to friends and potential foes alike--of our Nation's strength and resolve.”

What he's trying to do is exactly what you're calling attention to, namely to end the humanitarian disaster occasioned by the civil war in Syria.

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.

"Up-or-out" isn't broken--in fact, it's an essential and highly successful system--but it's also not perfect.

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