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In light of the crisis in Ukraine, NATO is boosting its presence in Alliance member state waters in Eastern Europe.

We're on board HNoMS Valkyrien, the current flagship of one of NATO's four naval fleets, the Standing NATO Mine Counter-Measures Group ONE (SNMCMG1), made up of five ships.

During their deployment, the ships - from Belgium, Estonia, the Netherlands and Norway -- will carry out maneuvers to reinforce their capacity to work together and guarantee the security of Baltic waters.