Western officials say Russia is carrying out a campaign of sabotage and disruption across Europe that has involved fires, attacking power stations and sending drones into EU airspace. More than 2,000 Finnish people including volunteers and students are taking part in the biggest civil defence exercise in Europe since the end of World War II. Key points and original sources are listed below.

• Western officials say Russia is carrying out a campaign of sabotage and disruption across Europe that has involved fires, attacking power stations and sending drones into EU airspace.S1

• More than 2,000 Finnish people including volunteers and students are taking part in the biggest civil defence exercise in Europe since the end of World War II.S2