Boosting NATO's presence close to Denmark sends "a message of assurance and cohesion within the Alliance," says a spokesperson.

"There is growing evidence that Russia may have used tankers in the Baltic Sea to launch drones — the drones that caused major disruption in Northern Europe," President Volodymyr Zelensky said.

A Russian surveillance plane recently flew within a few hundred meters of a German frigate operating in the Baltic Sea.

EU/NATO states are weighing a blockade or port denial strategy in the Baltic to counter Russia’s hybrid warfare and dark fleet operations.

An Arleigh Burke-class US Navy destroyer fired its 5-inch gun during live-fire gunnery training with allied ships in the Baltic Sea as part of NEPTUNE STRIKE 25-3.

NATO interceptors were scrambled again this week in response to Russian fighter jets detected over the Baltic Sea, according to the defence alliance. Hungarian fighter jets were deployed to identify and accompany five military aircraft near NATO airspace off the coast of Latvia,

EU member states are gambling "with much worse odds than Russian Roulette" by setting fishing quotas that risk stock collapse.

Denmark’s defense ministry said that it had “several capacities deployed” after drone sightings from Saturday into Sunday night.

EU leaders will discuss bolstering Europe's defences and Ukraine's financial firepower at a Wednesday summit in Denmark, where mysterious drone flights have ramped up fears about the threat from Russia.