Russian Frigate Fires Signal Rockets at Danish Helicopter, Denmark Won’t Invoke NATO Article 5

A Russian naval frigate fired two signal rockets at a Danish military helicopter on September 14, prompting Denmark’s defence minister to convene an emergency session of the Folketing and summon Moscow’s ambassador to Copenhagen.

Denmark’s response: serious but measured

Defence Minister Jeppe Bruus briefed all defence spokespersons at the Folketing and told reporters: “We are summoning the ambassador. This is highly unprofessional behaviour by the crew. There are many ways to contact a helicopter. We take this very seriously, but we have not reached the stage where Articles 4 or 5 of the NATO treaty need to be invoked.”

Article 4 allows NATO allies to call consultations on security matters. Article 5, the alliance’s collective-defence clause, treats an attack on one member as an attack on all. Bruus stressed that the situation does not yet require either mechanism.

Prime Minister Frederiksen’s reaction

Prime Minister Mette Frederiksen described the incident as “serious,” echoing the government’s concern while supporting the measured diplomatic response rather than military escalation.

Background: on 14 September the Russian frigate fired two signal rockets toward the Danish armed forces helicopter. The incident has drawn sharp criticism from Danish officials over what they call “extremely unprofessional” conduct by the Russian crew.