Machiavellian, one of Europe's leading stallions and sire of two Dubai World Cup (UAE-I) winners, was euthanized following a bout with laminitis. The 17-year-old son of Mr, Prospector was withdrawn from covering duties early in the spring because of laminitis.A Kentucky-bred and French champion, Machiavellian stood his entire career at Darley's Dalham Hall Stud near Newmarket, England. His 48 stakes winners include Dubai World Cup winners Street Cry and Almutawakel as well as major European champions Titus Livius, Whitewater Affair, and Susu. Street Cry, who stands at Darley at Jonabell near Lexington, was a U.S. grade I winner. Another Machiavellian son, Storming Home, was a two-time grade I turf winner in the U.S.Trained by Francois Boutin, Machiavellian raced as a homebred for Stavros Niarchos, having been bred by Niarchos' Flaxman Holdings Limited. Machiavellian won all three of his 2-year-old starts, all French stakes, including the Prix Morny Agence Francaise (Fr-I) and Prix de la Salamandre (Fr-I), and was that country's champion juvenile male. As a 3-year-old, he won the Prix Djebel and was second in the General Accident Two Thousand Guineas (Eng-I) in four starts. He retired with four wins from seven starts and earnings of $355,790.Liam O'Rourke, managing director of Dalham Hall, said, "Machiavellian has been a super horse to have anything to do with. He's been a terrific stallion, one whose influence will be with us for years to come through his sons and daughters. But above all else he was a lovely animal. His loss is a huge blow to everyone at Darley, particularly Tommy Sheridan who has looked after him since he first arrived here at the stud."Machiavellian, who was produced from the Halo mare Coup de Folie, leaves his group I-winning son Best of The Bests at Dalham Hall.