Mexico's president is ruling out the idea of joint U.S. and Mexican military operations targeting drug violence along the border.

But Felipe Calderon says he's interested in closer cooperation between the neighboring countries.

He also tells reporters he'd like the U.S. to help Mexican law enforcement by sharing intelligence on drugs traffickers, as well as providing high-tech surveillance equipment.

Calderon also urges President Barack Obama to do more to reduce American demand for Mexican drugs and halt the flow of powerful weapons across the U.S.-Mexican border.

His remarks in London follow recent comments by Obama on the problems of drug-related border violence.