More recently, Russian military jets have repeatedly encroached on Lithuanian airspace. The Latvians next door and the Estonians farther north are also building barriers along the Russian border. An Estonian border guard observation tower is seen near the Russian border in Omedu, Estonia. NATO's responseYet the walls and fences in the Baltics will do little to stop the Kremlin if it comes to military action. Russian troops would overrun the three countries in 60 hours, with the nearest NATO forces still dozens, if not hundreds, of kilometres away.

Source: CBC News January 29, 2017 10:01 UTC