Denmark will summon Russia's Copenhagen ambassador to a meeting over the incident, Defence Minister Jeppe Bruus separately told broadcaster TV2. "It is part of the pattern we see throughout Europe," Danish Prime Minister Mette Frederiksen warned on Tuesday morning. Key points and original sources are listed below.

• Denmark will summon Russia's Copenhagen ambassador to a meeting over the incident, Defence Minister Jeppe Bruus separately told broadcaster TV2.S1

• "It is part of the pattern we see throughout Europe," Danish Prime Minister Mette Frederiksen warned on Tuesday morning.S2