A methamphetamine known as the “crazy pill” is wreaking havoc in Bangladesh and fuelling an addiction crisis. The authorities have struggled for some time to crack down on yaba, which is also known as “Nazi speed”. Their efforts are bearing some fruit but tackling the widespread use of the drug remains an uphill battle.Black marketYaba is a street name for pills containing methamphetamine, a powerful, highly addictive stimulant. Users generally …