US troops in Poland 'a threat to Russia's security'

Russia expresses threat to national security as thousands of US Troops arrive in Poland as a part of a NATO's Atlantic Resolve mission ordered by outgoing president Barack Obama. Read more below:

Contribution by Udipto Phukan

http://www.aljazeera.com/news/2017/01/troops-poland-threat-russia-security-170112144005610.html