The Swedish military will also contribute one of its ASC 890 surveillance aircraft, made by Saab, and the country's coast guard will deploy four ships.

NATO countries will deploy frigates, patrol aircraft and naval drones in the Baltic Sea to help protect critical infrastructure and reserve the right to take action against ships suspected of posing a security threat,

Sweden's government says the country will contribute up to three warships to a NATO effort to increase the alliance’s presence in the Baltic Sea as it tries to guard against sabotage of underwater infrastructure.