Washington (CNN) Retired Adm. William McRaven said Thursday that the US is under attack from President Donald Trump, who he believes is working to "destroy" the country from "within" and "without."

"If you want to destroy an organization, any organization, you destroy it from within, you destroy it from without and then what you do is you convince everybody that you're doing the right thing," McRaven told CNN's Jake Tapper on "The Lead."

"So when you take a look at what the President has done, he's undermined the intelligence community, the law enforcement community, the Department of Justice, the State Department. He has called the press the enemy of the American people and I will tell you, I've fought a lot of America's enemies. The press is not the enemy of the American people."

McRaven, who oversaw the 2011 raid that killed Osama bin Laden, added that Trump is also "undermining us from without."

"He's obviously left our allies the Kurds on the battlefield," McRaven said while outlining a scathing op-ed he wrote for The New York Times . "We feel like we've betrayed them. He's undermined our NATO allies, he's taken us out of the JCPOA (Joint Comprehensive Plan of Action, the Iran nuclear agreement) and the TPP (Trans-Pacific Partnership trade deal) and really the international community has lost faith in America. And then throughout the course of all of this, he's convinced us he's doing it for all the right reasons, and I think that is really what is troubling."

Read More