By Anne Kauranen, Essi Lehto and Andreas Rinke HELSINKI (Reuters) -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,

NATO announced a new mission on Tuesday to better protect critical underwater infrastructure in the Baltic Sea with significantly more ships, aircraft and drones, as concerns about Russian aggression in the region grow.

NATO member countries have decided to deploy frigates, patrol aircraft and naval drones to the Baltic Sea following incidents of damage to undersea fibre-optic