LeGrand knew there would be a quid pro quo. There always was with Sandecker. He had already decided to lay his cards out on the table.

“You're certainly justified in demanding an accounting,” he agreed.

“I think so,” Sandecker said agreeably.

“It was quite a task to piece this story together, especially on such short notice, but I'll do my best to explain what happened.”

“Or thankfully in this case,” Sandecker said, “what didn't happen.”

LeGrand smiled wanly. “The end of World War II is the beginning of the story. With Germany defeated, the Allied coalition fell apart. Churchill came out with his Iron Curtain speech, and the stage was set for the cold war. The U.S. was still complacent because it was the only country that had the bomb. That smugness was eroded when the Soviets exploded their own nuclear device, and the arms race was on. We gained headway with the hydrogen bomb. But the Russians were breathing down our necks, and it was clearly a matter of time before the Soviets gained parity. As you know, the hydrogen bomb utilized a different process to create an explosion.”

“The thermonuclear bomb uses fusion rather than fission,” said Sandecker, who was well versed in atomic physics, having served on nuclear-powered submarines. “Atoms are joined rather than split apart.”

LeGrand nodded. “The hydrogen atom was fused with the helium atom. The sun and other stars use the same process to create their energy. Once it became known that the main Soviet fusion lab was in Siberia there was talk in our government of sabotage. Hubris was still strong after defeating the Axis, and some people talked nostalgically of the commando raid on the heavy-water plant in Norway. You're familiar with that mission, of course.”

“You mean the plant that was producing an isotope needed for the production of a German A-bomb,” Sandecker said.

“That's right. The raid delayed the German effort.”

'A similar commando raid in Siberia would have been an ambitious undertaking, to say the least."

“As a matter of fact, it would have been impossible,” LeGrand said. “The Norway raid was incredibly difficult to launch, even with accessibility and strong partisan support. There was an other consideration as well.”

Sandecker, who tended to see situations from a global perspective, said, “Germany was at war with the Allies at the time of the Norway raid. The U.S.S.R. and the U.S. had not declared open hostilities. Both sides were careful to avoid direct military confrontation. A raid on a Soviet laboratory would be considered an overt act of war that could not be ignored.”

“That's correct. It would be no different from the Russians destroying a lab in New Mexico. It could have provoked a shooting war.”

Sandecker was not exactly innocent when it came to making end runs around politically dicey situations. “A raid might be feasible, but it would have to be an ironclad secret with no way to trace it.”

LeGrand nodded. “That was precisely what the president said when the situation was presented to him.”