United States has confirmed plans to deploy missile defenses and Air Force units in Poland.

"As was announced by our two presidents in December, we plan to establish a new permanent U.S. air detachment in Poland, build missile defenses in Poland, and as agreed at the NATO summit, develop a contingency plan in the region," Clinton told journalists ahead of talks with Polish Foreign Minister Radoslaw Sikorski in Washington.

In 2009, the United States decided to deploy several F-16 fighter jets and Hercules transport aircraft in Poland. Polish Defense Minister Bogdan Klich has said the United States was also planning to deploy Patriot missile defense systems in Poland at a base just 100 kilometers from the Russian exclave of Kaliningrad.

Moscow has long opposed the deployment of U.S. missile defenses near its borders, arguing they would be a security threat and could destroy the strategic balance of forces in Europe.

The United States scrapped earlier plans in September last year for an anti-ballistic-missile defense system in the Czech Republic and Poland. Moscow welcomed the move, and Russian President Dmitry Medvedev said later that Russia would drop plans to deploy Iskander-M tactical missiles in its Kaliningrad Region, which borders NATO members Poland and Lithuania.

Russia and NATO agreed to cooperate on the so called Euro missile defense system at the Lisbon summit. NATO insists there should be two independent systems that exchange information, while Russia favors a joint system.