International help is especially appreciated for cases when whole ships or containers filled with contraband can be intercepted in port, because police can seize a larger amount and there is much less risk of meeting resistance from drug dealers. It is at these times that information from the other side (exporting or transshipping nations) has decisive importance.
尤其在整船漁船或貨櫃走私的案件中，「截毒於關口」可以緝獲鉅量毒品，受到毒梟抗拒的風險也低，這時外國（出口國、轉運國）提供的情報，往往具有決定性的份量。