Afghanistan's Minister for Anti-Narcotics, Zafar Ahmad and Interior Minister, Rehman Malik on Wednesday vowed to continue efforts to boost bilateral co-operation, especially in anti-narcotics campaign. Besides matters of mutual interest, they discussed border management and drug control during the meeting held here. Rehman Malik said Pakistan gives priority to control narcotics and expressed the hope that the two sides would witness further expansion of co-operation in the near future.