WASHINGTON – How much does the U.S. government really trust Canada? Maybe less than you think.

Espionage warnings from the Defence Department caused an international sensation a few years ago over reports of mysterious coins with radio frequency transmitters, until they were debunked. The culprit turned out to be a commemorative quarter in Canada.

But at the height of the mystery, senior Pentagon officials speculated whether Canadians were involved in the spy caper, according to emails marked "Secret/NoForn" and obtained this week by The Associated Press under the U.S. Freedom of Information Act.

"I don't think it is an issue of the Canadians being the bad guys," the Pentagon's counterintelligence chief wrote, "but then again, who knows."

In the emails, released to The AP with names blacked out but job titles disclosed, Pentagon officials question whether they should warn military officers in the U.S. Northern Command, who regularly met Canadian counterparts about classified subjects inside bug-proof, government meeting rooms. The rooms are known as secure compartmentalized information facilities, or SKIFs.

"Isn't the Canadian piece something that should be briefed to Northcom since the Canadians sit in their SKIFs?" asked the Pentagon's deputy director for counterintelligence oversight.

"Good point," replied the Pentagon's acting director for counterintelligence. "It is possible that DSS (the U.S. Defence Security Service) sent their report to Northcom. Then again, I don't think it is an issue of the Canadians being the bad guys, but then again, who knows."

Who knows?

Canada is among the closest of U.S. allies, its continental northern neighbour and the leading oil supplier for the U.S. The intelligence services of the two countries are extraordinarily tight and routinely share sensitive secrets. U.S. President Barack Obama chose Canada as the destination of his first foreign trip, to underscore what he described as the two countries' long-standing and growing friendship.

"I love this country and think that we could not have a better friend and ally," said Obama, whose brother-in-law is Canadian, during his February visit to Ottawa.

In sensational warnings that circulated publicly in late 2006 and early 2007, the Pentagon's Defence Security Service said coins with radio transmitters were found planted on U.S. army contractors with classified security clearances on at least three occasions between October 2005 and January 2006 as the contractors travelled through Canada.

In January 2007, the government abruptly reversed itself and said the warnings were not true. But the case remained a mystery until months later, when AP learned that the flap had been caused by suspicions over the odd-looking Canadian "poppy" quarter with a bright red flower. The silver-coloured 25-cent piece features the red image of a poppy – Canada's flower of war remembrance – inlaid on a maple leaf.

What suspicious contractors believed to be "nanotechnology" on the coins actually was a protective coating the Royal Canadian Mint applied to prevent the poppy's red colour from rubbing off. The mint produced nearly 30 million such quarters in 2004 commemorating Canada's 117,000 war dead.

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The Pentagon turned over the latest emails from inside its Office of the Undersecretary for Defence for Intelligence nearly two years after The AP requested them under the Freedom of Information Act. Many of the emails were censored over what the Pentagon said was national security and personal privacy.

http://wid.ap.org/documents/canada – northcom.pdf