Russia turns up uninvited to Nato wargames drills!

• Marines on board USS Mount Whitney off the Norwegian coast, had gathered for a group photo on deck when the Tupolev TU-142 soared overhead.

The whirring of a low-flying Soviet Union-era war plane signalled Russia's uninvited arrival to Nato's biggest military exercise since the end of the Cold War.

Marines on board USS Mount Whitney off the Norwegian coast, had gathered for a group photo on deck when the Tupolev TU-142 soared overhead.

"It's a long-range maritime patrol reconnaissance plane," said one fascinated marine after casting an expert eye over the visitor.Although he had seen plenty of images of the aircraft, this was the first time he had seen it live, so to speak.

Russia has already made clear its displeasure at Nato's Trident Juncture exercises, the largest by the alliance since the end of the Cold War. They warned that the two-week long exercise, which it sees as an anti-Russian show of force, would not go unanswered.

Last week, Moscow announced plans to test missiles in the region.

According to Avinor, the public operator of most civil airports in Norway, Russia sent a NOTAM (Notice to Airmen) about the missile tests November 1-3 in the Norwegian Sea.

Any missile testing "will not change the plan of our exercise," Nato Secretary General Jens Stoltenberg said on Wednesday.

"We have not seen anything resembling a missile test, or even ships or aircraft in the area that would be relevant to documenting or monitoring missile testing," said Robert Aguilar, captain of the USS Mount Whitney.

The Tupolev's passage appeared to be part of Russia's response.

But Colonel Garth Manger, a British Royal Marine in charge of operational duties aboard the US ship, took it in his stride. "They're watching us and we're watching them," he said.

Like the Tupolev, the USS Mount Whitney is a holdover from the Cold War era.

The third oldest vessel in the US Navy and the flagship of the US 6th Fleet, it has seen nearly 50 years' service.