When Saad Tawfiq watched Colin Powell’s presentation to the United Nations on February 5 2003 he shed bitter tears as he realised he had risked his life and those of his loved ones for nothing.

As one of Saddam Hussein’s most gifted engineers, Tawfiq knew that the Iraqi dictator had shut down his nuclear, chemical and biological weapons programmes in 1995 — and he had told his handlers in US intelligence just that.

And yet here was the then US secretary of state — Tawfiq’s television was able to received international news through a link pirated from Saddam’s spies next door — waving a vial of white powder and telling the UN Security Council a story about Iraqi germ labs.

“When I saw Colin Powell I started crying. Immediately. I knew I had tried and lost,” Tawfiq told AFP five years later in the Jordanian capital Amman.

Now in his fifties, a round-faced man with a small moustache and lively eyes behind delicate spectacles, Tawfiq described how the CIA set up an elaborate operation to recruit Iraqi weapons scientists and then ignored the results.

When you realize our government’s idea of diplomacy is – how big a bomb should we use – you shouldn’t be surprised over tales like this.