With his first two novels in the series, Gardner stuck to the standard Bond formula. But with his third novel, Icebreaker, he stayed outside the formula and established all the key elements that would comprise his 007 series: Bond actually involved heavily in intelligence and espionage and a plot with a real-life political or historical background, instead of a big adventure with the fate of the world in the balance and an evil multimillionaire. I don't understand why this bothers so many people. There's dozens of Bond stories following the same routine, formula -the same story with different characters and locations- and Gardner at least tried to do something original and different with the character.
In Icebreaker, Bond is assigned to a team also consisting of American, Israeli, and Russian agents. Their mission in the arctic is to monitor a convoy of stolen high-grade military equipment from a Russian army outpost to a WWII-era bunker serving as the headquarters of the National Socialist Action Army, a well-organized neo-Nazi paramilitary group responsible for a number of terrorist attacks and assassinations. Bond quickly learns that the mission has been compromised. The team has been infiltrated by enemy agents. Additionally, the KGB is using the operation as a scheme to capture and deliver Bond to Moscow.
The story is extremely fast-paced. The action is tense and well-written. It's fun watching Bond put the pieces together and doubt who he can trust. The locations are an original and fresh change of pace for Bond and really enhances the story's atmosphere and suspense, as there is nothing glamorous or ritzy about Bond struggling to survive in the frozen forests of Finland and Russia.
There's a couple minor problems. If the Soviet Union was having problems with their weapons ending up in the hands of a terrorist faction, would they really go to the UK and US for help? And it would seem that a NATO or Russian special ops team would be more suited to carry out a reconnaissance of the enemy base in the middle of the arctic than a team of intelligence agents. But then, this is a Bond story, so I don't expect realism to get in the way of entertainment.
Overall, one of Gardner's best Bond novels and just a really great Cold War adventure for 007.