Khartoum promptly accused the rebels of duplicity: talking peace but trying to keep Sudan split.
Like Obama and Sarkozy, the media blame Israel and its elected leaders for the Palestinians' duplicity.
But just how worried should we be about the level of duplicity revealed by this recent study?
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Film-maker Michael Winner hailed Russell's "duplicity of mind", adding he had made an "enormous contribution" to British cinema.
Clinton said the U.S. would seek to "quit the redundancy and the duplicity" of existing international aid programs in Afghanistan.
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Their veracity may be open to question, but not because of some duplicity on the part of the ban movement.
In spite of what looks like duplicity over Mr bin Laden's hiding place, the nuclear power is too dangerous to abandon.
Deception, duplicity and obfuscation appear to be the strategies of the day.
And now, the Americans are very publicly accusing Pakistan of stunning duplicity.
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The secret missile crisis came about through an unnerving mix of Soviet duplicity, American intelligence failures and the mercurial temperament of Fidel Castro.
After running through the record of Palestinian duplicity, failed governance, terrorism and bad faith, he called for Israel to apply its sovereignty to Judea and Samaria.
With a blandly dismissive anti-romanticism, the director sees through the pretenses of civility to the mediocrity, disappointment, venality, gullibility, duplicity, and boredom that pass for daily life.
The original House of Cards told of a conniving chief whip, played by Ian Richardson, who uses duplicity and guile to have himself elevated to the post of Conservative prime minister.
The Modesto Bee, in an editorial, blasted Condit for his "duplicity" and "abhorrent" behavior, saying it hindered the police investigation into Levy's disappearance, which authorities are treating as a missing person case.
It was an eager seller of mortgage securities during the boom, even as its traders were betting on a market slump, fuelling the same allegations of duplicity that Goldman Sachs has faced.
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He said there was "a long track record of duplicity" by France in dealing with allies and questioned whether the French would make an aircraft carrier available for an operation like the Falklands.
Hundreds of secretly shot videos seized from the home of Vladimiro Montesinos, Peru's fugitive spy chief, have revealed the duplicity and venality of many of the country's politicians, army officers, judges and businessmen.
And this report describes a regime that was so paralyzed by its culture of duplicity and revenge as to be unable to really recognize or deal with the threat posed by a possible U.S. invasion.
Many people who once backed Armstrong, following years of allegations about his potentially being a drug user, have now expressed their anger at his apparent duplicity but Baden said there was no point in recriminations.
Obama would never have been able to create his diversion from the unwelcome fact of Palestinian duplicity and rejectionism, to imaginary problem with the size of Israel without the enthusiastic support given to him by the Israeli Left.
Equally astonishing is the treachery and duplicity of much of the Democratic establishment, which purported to be backing the front-runner, while all the time encouraging Mr Obama to run for fear that the compromised former first lady was unelectable.
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Anything that looks like a miracle in New York turns out to be a tale of years of complex political maneuvering and the pursuit of mind-boggling profit margins in which a public vision is maintained in the face of monumental setbacks, betrayals, duplicity and despair.
What is evident, though, is that the military leadership may not be too displeased to see the back of Mr Haqqani at a time when senior US officials are becoming less and less discreet in voicing their annoyance with Pakistan's perceived duplicity on dealing with the Taliban.
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