The alliance has stepped up intelligence, surveillance and reconnaissance activities around the Baltic Sea amid concerns of Russian gray zone warfare.

After NATO scrambled warplanes after Russian incursion in Poland, they had to send a plane again after Putin's drone hit areas on the Romanian side of the border.

Just three days before US President-elect Donald Trump returns to the White House, Russia and Iran have finally signed a “comprehensive partnership agreement,” a deal that had been in the works for months.

Nato warplanes were scrambled overnight because of a major Russian missile and drone attack on Ukraine’s critical infrastructure.

The Ryanair flight from the UK was forced to abort its landing and divert to Poland following mysterious interference just as it was about to touch down in Lithuania

Russia on Thursday accused NATO and the West of making "evidence-free" allegations against Moscow over ships purportedly involved in sabotaging undersea cables in an effort to curb sea-borne Russian oil exports.

Moscow has previously denied claims of sabotage and called accusations unfounded, but Western officials believe there is a plot to plant explosive devices.

On Monday, Bavarian State Police reported that drone flights were spotted over German armed forces (Bundeswehr) sites in Manching and Neuburg an der Donau. Three drones were reported flying on December 18 over the airfield in Manching, which is used to test the airworthiness of new aircraft ordered for the German military.

Russia said on Friday that any placement of British military assets in Ukraine under a new 100-year partnership agreement between Kyiv and London would be of concern to Moscow.

Attacks on underwater cables in strategic areas connecting telecommunication lines and power sources in Asia and Europe are suspected to be coordinated attacks by China and Russia.

General Mark Rutte announced on Tuesday a new mission, dubbed Baltic Sentry, to safeguard undersea cables in the Baltic Sea region.Why it MattersIn recent months, a series of incidents involving disconnected or cut undersea cables in the Baltic Sea has highlighted their vulnerability.