Lord Sebastian Coe, the former Olympic champion and vice president of athletics international body the IAAF, insists athletics chiefs will intensify the war against drugs cheats in the aftermath of the positive tests by sprinters Asafa Powell and Tyson Gay.
It's not known which substance Gay, the fastest man in the world this year, took, although that should be confirmed after his B sample is analysed.
Powell, who failed to make the Jamaican team for next month's Moscow world championships, was tested at the national trials in June and returned an adverse finding for oxilofrine - a stimulant that boosts fat-burning.
Jamaica's Sherone Simpson, a three-time Olympic medallist, also tested positive.
Lord Coe says it's not a war the sport can afford to lose and would rather have the short-term embarrassment from the sorts of stories than a decline in the sport to a position where no one has any trust in the athletes.