Ash Carter: “We stand alert with our missile defense forces, with our allies, the Japanese and the South Koreans”

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.

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

The goal of United States policy in Syria is to end the Syrian war--civil war.