NATO deploys troops to Poland while concerns about country's army rise

By Lidia KellyORZYSZ, Poland (Reuters) - Poland on Thursday welcomed the first U.S. troops in a multi-national force which is being posted across the Baltic region to counter potential threats from Russia.More than 1,100 soldiers -- 900 U.S. troops as well as 150 British and 120 Romanians -- are to be deployed in Orzysz, about 57 km (35 miles) south of Russia's Baltic Sea enclave of Kaliningrad, where Moscow has stationed nuclear-capable missiles and an S-400 air missile defense system."Deployin