Last week, jets from the NATO Air Policing Mission in the Baltic states were scrambled to escort a Russian military aircraft through international airspace over the Baltic Sea.
On July 6, fighter aircraft conducting the NATO Air Policing Mission in the Baltic states intercepted one Sukhoi Su-27 flying from Kaliningrad to mainland Russia.
Its onboard transponder was off, no flight plan had been pre-filed and the pilot was not maintaining radio communication with the regional air traffic control centre.
The NATO Air Policing Mission is based in Lithuania and Estonia.
Editor: Helen Wright