Mexico's drug conflict intensifies

AlJazeeraEnglish
September 19, 2009
The Mexico-US border has become a battleground in the war on drug cartels.

Traffickers criss-cross the river that marks the border in a cat and mouse game with authorities on both sides.

Al Jazeera's Mariana Sanchez spent the day with US police patrolling the area to see just how well organised the cartels have become.