Generate text that refutes this claim: Drugs currently fund terrorism and regional instability  The Taliban gets most of its revenue from poppies, which provide the opium for heroin. They do this by intimidating local farmers who would otherwise sell their harvest at market. They then demand “protection money” as well, or else either another local warlord or the ‘protectors’ themselves would rob the farmer. Something like 22,700 people have died in Mexico since January 2007 from gangsters who want to protect their revenue and almost the entire continent of South America, from Brazil to Colombia, has had their governments destabilised by drug lords. [1] The hugely-costly but unsuccessful war on drugs could be ended, starving terrorists of the profits of drug production. As a result peace and development could be brought to unstable drug-producing states such as Colombia and Afghanistan.  [1] Mexico under siege, The drug war on our doorstep, Los Angeles Times , 27 September 2011,
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Whether legal or illegal, drugs will still be a source of income for warlords and terrorist groups. Instead of starving them off, the dealers become more competitive and lower their prices. The only way to stop these people using drugs as a source of income is to remove poppies from Afghan fields, to destroy coca plantations.