Thailand's drugs smuggling battle
11 July 2012 Last updated at 00:56 BST
For centuries the Golden Triangle - where Burma, Thailand and Laos meet - has been notorious for the production of opium and drug smuggling.
While the amount of poppies grown there has more than halved over the past decade, production of the stimulant methamphetamine has soared.
Most of it is produced in Burma, and much of it ends up in Thailand.
Jonah Fisher reports.