Gli Stati Uniti, in base a quanto annunciato dal Ministro della Difesa Hagel, taglieranno lo sviluppo della quarta fase del programma di difesa missilistica da realizzare in Europa.
Ciò al fine di reindirizzare risorse a favore per ridurre la minaccia proveniente dalla Corea del Nord:

The United States has effectively canceled the final phase of a Europe-based missile defense system that was fiercely opposed by Russia and cited repeatedly by the Kremlin as a major obstacle to cooperation on nuclear arms reductions and other issues.
Russian officials here have so far declined to comment on the announcement, which was made in Washington on Friday by Defense Secretary Chuck Hagel as part of a plan to deploy additional ballistic missile interceptors to counter North Korea. The cancellation of some European-based defenses will allow resources to be shifted to protect against North Korea.[…]
American experts insisted that the Russians’ concern over the antimissile program was exaggerated and that the system would not have jeopardized their strategic missiles had the final phase been developed. That Russian concern has now been addressed.
“There is no threat to Russian missiles now,” said Steven Pifer, an arms control expert who has managed Russia policy from top positions at the State Department and the National Security Council. “If you listen to what the Russians have been saying for the last two years, this has been the biggest obstacle to things like cooperation with NATO.”
“Potentially this is very big,” said Mr. Pifer, now of the Brookings Institution. “And it’s going to be very interesting seeing how the Russians react once they digest it.”