Memories of the Cold War were raised when RAF jets had to be scrambled after Russian aircraft were detected observing a British naval exercise.
Two Tornado F3s took off from Leuchars air base in Fife after a pair of Russian Bear Foxtrot spy planes were spotted on radar screens.
The aircraft were snooping on Neptune Warrior, a Royal Navy exercise taking place near the Outer Hebrides last week.
The RAF would not say yesterday exactly when the incident happened, but said no contact was made between the Russian and British aircraft. Sqn Leader Keith Wardlaw said: "The Russians obviously thought it might be worth coming to have a look at what we were up to and probably take some photos.
"It's a throwback to the Cold War when they used to regularly poke and prod at the edges of British airspace and test our reaction times. The whole encounter probably lasted 20 minutes."
Paul Jackson, the editor of Jane's All The World's Aircraft, said: "The exercise was in international waters and the Russians have got as much right to be there as we have. We do it to them, they do it to us.
"All the RAF did was to tell them, 'We could do this for real if we wanted'."
Tornado F3
Last week, RAF Leuchars in Fife scambled two Tornado F3 interceptors, when radar detected two Tupolev Tu-142 Bear Bombers and the alarm was sounded "Bears in the Air".

The RAF would not disclose the exact time of the incident, which was to the north of the Outer Hebrides. It did say that no contact was made between the aircraft.

The Russian Bear Foxtrot bombers are renowned maritime raiders that regularly probed the United Kingdom's airspace during the Cold War.

The Russian aircraft were snooping on Neptune Warrior, a Royal Navy exercise taking place near the Outer Hebrides last week.  Neptune Warrior was a live-fire naval training exercise involving warships, submarines and aircraft that took place between April 22 and May 3.



The Tornado's watched the Russians for approximately 15 minutes until the bombers returned to their home base in Murmansk.



During the Cold War in the 1970s and 1980s, Soviet spies were sometimes spotted watching from the perimeter of RAF stations to time exactly how long it took jets to take off and intercept Bear bombers, probing the United Kingdom's defences and testing the response. Nato pilots in those days were well accustomed to an almost daily aerial game of cat-and-mouse.

Squadrons of Phantom interceptors were on constant quick-reaction standby through the 1970s and 1980s to deal with the threat of Soviet long-range bombers engaging in a long-range attack on Great Britain.  The Bears can carry an arsenal of missiles, some nuclear-tipped, to strike NATO warships blocking the entrance to the vital North Atlantic sealanes between the United States and Europe.

In July, the Tornado will be replaced by the new Eurofighter Typhoon. Currently, RAF personnel on scrambling duty spend most of their time on counter-terrorist missions, checking out commercial airliners approaching Britain in ways that arouse suspicion, either because they have taken the wrong flight path or because the pilot has not contacted ground control.