NATO's Secretary General Mark Rutte on Thursday backed U.S. President Donald Trump's comments this week that NATO member countries should shoot down Russian drones and airplanes if they enter their airspace,

Denmark's defense chief has called a series of unidentified drones being spotted near airports and military installations a "hybrid attack."

Officials say defending against drones is complex and requires affordable technology which can be quickly mass produced

Russian drones are now targeting Nato members. As Russia is running out of troops, Russia's hybrid war is not just cost-effective; it's also a necessity.

Europe is said to be preparing for war following the rising tensions between NATO and Russia. A German general recently claimed that if a war with Russia were to begin, we would be seeing a daily death count on the battlefield that wouldn't have been seen in decades.

Estonia is "always open" to hosting British nuclear-capable F-35A fighter jets according to Estonian Defence Minister Hanno Pevkur. Responding to the question whether Estonia is ready to host Britain's nuclear-capable aircraft, he said the Baltic country is keen on hosting allied forces.

President Trump is shifting his tone on Russia after meeting with Ukraine's president at the U.N. General Assembly on Tuesday. CBS News New York's Dick Brennan reports.

Ukraine's president tells UN action must be taken to stop Russia now because Putin wants to expand war in Europe.