From the White House: [W]e have made specific and proven advances in our missile defense technology, particularly with regard to land- and sea-based interceptors and the sensors that support them. Our new approach will, therefore, deploy technologies that are proven and cost-effective and that counter the current threat, and do so sooner than the previous program. Because our approach will be phased and adaptive, we will retain the flexibility to adjust and enhance our defenses as the threat and technology continue to evolve.

To put it simply, our new missile defense architecture in Europe will provide stronger, smarter, and swifter defenses of American forces and America’s allies. It is more comprehensive than the previous program; it deploys capabilities that are proven and cost-effective; and it sustains and builds upon our commitment to protect the U.S. homeland against long-range ballistic missile threats; and it ensures and enhances the protection of all our NATO allies.

This approach is also consistent with NATO missile — NATO’s missile defense efforts and provides opportunities for enhanced international collaboration going forward. We will continue to work cooperatively with our close friends and allies, the Czech Republic and Poland, who had agreed to host elements of the previous program. I’ve spoken to the Prime Ministers of both the Czech Republic and Poland about this decision and reaffirmed our deep and close ties. Together we are committed to a broad range of cooperative efforts to strengthen our collective defense, and we are bound by the solemn commitment of NATO’s Article V that an attack on one is an attack on all. (photo: Charles Dharapak/AP)