U.S. tanks are part of a military buildup designed to deter Russian aggression in Eastern Europe.
Interceptions have remained high since a huge spike in 2014.
The Russian leader said he does not always understand the West in Stone's new documentary.
Moscow has been working on missiles to overwhelm defences.
The U.S. could simply provide military equipment and logistical support to its European allies.
Russian and Belarusian paratroopers are to take part in drills in the Balkans.
Jens Stoltenberg spoke as 4,000 troops prepare to shore up defenses around the Baltic Sea.
Iskander units were drafted in the exercise close to the Estonian border.
Estonia’s Ministry of Defence claims Russian jets violated its airspace four times in 2016.
Baltic armed forces are set to practice urban warfare in an artificial town.
Turkey and NATO need each other, and the U.S. has to make that clear.
Polish military police suspects Lieutenant Piotr Capala may have offered to spy on Poland.
Germany’s foreign minister does not think Russia can be Turkey’s alternative to NATO.
To send a message to Putin, NATO plans to deploy military units to Eastern Europe in numbers unmatched since the Cold War.
Vladimir Putin’s spokesman brushed off speculation Russia has plans in place to attack.
After 40 years on stage, Paata Burchuladze is running to be Georgia’s next prime minister.