Units of the Swedish Armed Forces are currently on deployment in several international operations either actively or as military observers, including Afghanistan as part of the Resolute Support Mission and in Kosovo (as part of Kosovo Force). Moreover, Swedish Armed Forces contribute as the lead nation for an EU Battlegroup approximately once every three years through the Nordic Battlegroup. Sweden has close relations with NATO and NATO members, and participates in training exercises like the Admiral Pitka Recon Challenge, and Exercise Trident Juncture 2018. Sweden also has a strong cooperation with its closest allies of the Nordic countries being part of the Nordic Defence Cooperation (NORDEFCO) and joint exercises such as Exercise Northern Wind 2019.