Strauss-Kahn case: why prosecutors want to drop all charges

``The main reason, expected to be spelled out in detail during a court hearing Tuesday, is Ms. Diallo's credibility as a witness. A Guinean immigrant, she apparently lied on her request for US asylum and made other claims that later turned out to be false. In addition, even before Mr. Vance had decided whether to pursue the criminal case, her lawyer filed a civil lawsuit against Strauss-Kahn. Moreover, Diallo has made television appearances to explain her allegations -- something most prosecutors would discourage before a case goes to court.'' -- Looks like a tee-up and knock-down to us. Perhaps someone wanted DSK out of the IMF, and/or out of the running for French presidency. Or just wanted to send him a message...