(CNN) — U.S. Secretary of Homeland Security Janet Napolitano said Monday that the war on drugs in Mexico “is not a failure.”

At a press conference in Mexico City after meeting Mexican Interior Minister Alejandro Poire, Napolitano called the drug policies of both Mexico and the United States “a continuing effort to keep our peoples from becoming addicted to dangerous drugs.”

Napolitano also said that among the things discussed at the meeting with Poire was how to have a more regional approach to a number of security issues threatening the United States, Mexico and Central America.

Asked why, in spite of efforts by both Mexico and the United States, the leader Mexico’s most powerful criminal organization — the Sinaloa drug cartel — remains at large, Napolitano implied it’s only a matter of time before Joaquin “El Chapo” Guzman falls.

“It took us 10 years to find Osama bin Laden and we found him,” Napolitano said. “And you know what happened there. I’m not suggesting the same thing would happen with Guzman but I am suggesting that we are persistent when it comes to wrongdoers and those who do harm in both of our countries.”

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