President-elect Donald Trump’s newly appointed national security adviser, retired Lt. Gen. Mike Flynn, has outlined his plan to defeat terrorism extensively in recent months.

One of Trump’s earliest national-security aligned supporters, Flynn wrote a book, did a circuit of media interviews, and spoke on behalf of Trump’s campaign during the general election.

His book, “The Field of Fight: How We Can Win the Global War Against Radical Islam and Its Allies,” which focused on the importance of identifying “radical Islam” and its role in terrorism. He defined the fight against terrorism as a “world war” and emphasized the need to begin the fight at home.

“If we cannot criticize the radical Muslims in our own country, we cannot fight them either in America or overseas,” Flynn wrote in the book’s conclusion. “Unless we can wage an effective ideological campaign in the United States, we will not be able to defeat the jihadis on foreign battlefields, because we will not understand the true nature of our enemy.”

Such views have led to Trump’s decision to appoint Flynn national security adviser being met with criticism.

Flynn was formerly the head of the Defense Intelligence Agency, and he spent years fighting terrorist groups in Iraq and Afghanistan. Flynn was fired from the DIA in 2014, and he claims it’s because he took a stand about “radical Islam.” Other accounts, including those of former officials relayed to The Washington Post, have blamed his management style.

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Featured image courtesy of Reuters.