Ash Carter: “DOD must now prepare for and seek to prevent the possibility of a conflict that extends into space, and we are.”

Iran's ballistic missile activities pose a significant threat to the Joint Force and our regional allies and partners, particularly Israel.

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.