But they acknowledge that only a long-term campaign can end the violence in Mexico and stop the flow of drugs.

"Ultimately," said one senior official, "we're going to end up holding the can for the failure to stop the flow of drugs."

Meanwhile, we continue our efforts to cut the flow of drugs into America.

But the military has failed to diminish either the flow of drugs or the body count.

"The people want us to stop the flow of drugs."

By doing so, you'd probably cut the flow of illegal drugs into the country as well.

I'm in front on a plan to stop the flow of drugs.

But the flow of drugs into this country is as free as ever.

They are asked to step up efforts to control the flow of drugs by mail.

The cooperation goes far beyond joint efforts in the past to fight the flow of drugs.