soldiers seized 23.5 tonnes of cocaine – enough for about 200 million lines of the drug – in the world's biggest ever cocaine bust. It was destroyed in a public bonfire. Calderon is hoping his crackdown will bring his administration rewards from the US, which has frequently urged its southern neighbour to be more aggressive against drug mafias. The US Congress is debating a $1.4 billion anti-drug aid proposal for Mexico, including high-tech phone-tapping equipment and possibly Black Hawk helicopters.The proposal has been tacked onto a bill requesting more funding for US military operations in Iraq and Afghanistan. Calderon argues the US government has a responsibility to help out because US drug users fund the traffickers - analysts estimate that Mexican drug trade to the US is worth around $10 billion to $30 billion a year.Most of the weapons fuelling the bloodshed are also bought in US gun stores and smuggled south over the Rio Grande."How are we supposed to confront these g...