PARIS: The seizure of a large amount of performance-enhancing drugs in a raid by Yemeni law enforcement agents is “a landmark moment,” the head of investigations for the World Anti-Doping Agency (WADA) has told AFP. Gunter Younger said the operation, which netted 447kg of both narcotics and performance-enhancing substances, mainly amphetamines, showed authorities were increasingly tracking the cross-border trade of prohibited substances.