VP Biden: US weighs rotating forces to Baltics

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U.S. Vice President Joe Biden, right, and Estonian President Toomas Hendrik Ilves meet for talks in Warsaw, Poland, Tuesday, March 18, 2014. Biden arrived in Warsaw for consultations with Polish Prime Minister Donald Tusk, Polish President Bronislaw Komorowski and Estonian President Ilves, a few hours after Russian President Vladimir Putin approved a draft bill for the annexation of Crimea, one of a flurry of steps to formally take over the Black Sea peninsula. (AP Photo/Alik Keplicz)

WARSAW, Poland (AP) — Vice President Joe Biden says the U.S. is considering rotating American forces to the Baltic region as a step toward ensuring the collective defense of NATO allies against Russian aggression.

Biden says that those forces could conduct ground and naval exercises, plus engage in training missions.

Biden is speaking after meeting with Estonian President Toomas Hendrik Ilves in Warsaw, Poland. Biden is in Europe to reassure allies who are concerned about Russia's intervention in the Ukrainian region of Crimea.

Biden says the rotating forces are among multiple steps the U.S. is exploring to strengthen NATO. He says in recent weeks the U.S. has augmented its rotation of NATO's air-policing program in the Baltics. He says the U.S. is working to line up other countries to augment that program, too.