On September 21, 2023, Danish Prime Minister Mette Frederiksen declared that Europe is engaged in a 'hybrid war' following a series of drone incursions that forced the closure of two major Danish airports. The Danish airspace breaches involved professional aerial drone attacks targeting critical infrastructure, with Copenhagen and Oslo airports closed on separate occasions. Frederiksen directly attributed the attacks to Russia, calling it the primary threat to European security. The events prompted NATO diplomatic engagement, with Estonia and Poland convening urgent talks after similar airspace violations. Aalborg Airport in northern Denmark was briefly closed for a second night due to another suspected drone incursion. Denmark is stepping up defense measures, including raising the alert level and enhancing frontline defenses with anti-drone capabilities, supported by Ukrainian expertise. Earlier in September, the Danish Defense Ministry announced an €87 million purchase of the Franco-Italian SAMP/T air defense system, the largest arms purchase in Danish history. Frederiksen called for increased European defense spending and highlighted the need to expand the European defense industry amid escalating security challenges.

On September 21, 2023, Danish Prime Minister Mette Frederiksen declared that Europe is engaged in a 'hybrid war' following a series of drone incursions that forced the closure of two major Danish airports. The Danish airspace breaches involved professional aerial drone attacks targeting critical infrastructure, with Copenhagen and Oslo airports closed on separate occasions. Frederiksen directly attributed the attacks to Russia, calling it the primary threat to European security. The events prompted NATO diplomatic engagement, with Estonia and Poland convening urgent talks after similar airspace violations. Aalborg Airport in northern Denmark was briefly closed for a second night due to another suspected drone incursion. Denmark is stepping up defense measures, including raising the alert level and enhancing frontline defenses with anti-drone capabilities, supported by Ukrainian expertise. Earlier in September, the Danish Defense Ministry announced an €87 million purchase of the Franco-Italian SAMP/T air defense system, the largest arms purchase in Danish history. Frederiksen called for increased European defense spending and highlighted the need to expand the European defense industry amid escalating security challenges.