New Delhi, May 16 -- Union home minister Amit Shah on Friday called for a unified global effort on the war on drugs, calling upon ambassadors and diplomats of around 40 countries to join the fight, the home ministry said in a statement. He was delivering the R N Kao memorial lecture of the Research and Analysis Wing (R&AW) in Delhi. The event was attended by ambassadors and diplomats from 40 countries, including US envoy Sergio Gor, and senior officials from the Indian security apparatus. "He (Shah) stated that unless there was a high degree of global alignment on what is designated as controlled substances as well as common standard penalties for drug trafficking, drug cartels would continue to take advantage of the inconsistencies in poli...