NATO

Russia has submitted a claim to seabed beneath the North Pole, which will be considered by the United Nations

Troops practice combat alertness on Ukraine's border and off Russia's Black Sea coast

New maritime security dynamics in Europe's 'near abroad' present NATO with challenges ahead of the 2016 summit in Warsaw

Russian interventionism abroad has encouraged Nordic countries to reassess their defence ties with the West

Russia-Turkey clash and Montenegro's NATO membership have hurt Kremlin-NATO ties further

The debate over an international force to fight Islamic State has gained urgency in the wake of the Paris attacks

Montenegro is set to join NATO but move will grow tensions with Moscow and cause domestic woes for Podgorica

Russian-Turkish rift will prompt NATO to re-examine "out-dated" framework for relations with Russia