On Thursday 9th June, Russia's Ministry of Defence released footage of Russian vessels carrying out planned drills in the Baltic Sea.
The statement said that naval tactical groups of Russia's Baltic Fleet are now grouped in "designated areas".
It's also been reported that corvettes, patrol boats, missile boats, frigates, minesweepers, landing craft and speedboats are all involved in the exercises.
Fourteen NATO countries are conducting the BALTOPS 22 naval drills in the Baltic sea over the next week.
A NATO statement also said that these fourteen NATO allies plus Sweden and Finland are involved in the drills too.
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