U.S.-Mexico Efforts Targeting Drug Cartels Have Unraveled, Top DEA Official Says

A senior Drug Enforcement Administration official told NPR efforts to target drug cartels operating inside Mexico have unraveled because of a breakdown in cooperation between law enforcement agencies and militaries in the two countries.

"We're willing to share [intelligence] with our counterparts in Mexico, but they themselves are too afraid to even engage with us because of repercussions from their own government if they get caught working with DEA," said Matthew Donahue, the DEA's deputy chief of operations.

The collapse of joint drug interdiction efforts has occurred at a time...