He is the author of eight books and writes a weekly column on the Pentagon and national security issues called "Inside the Ring".

[6] In 2008, Gertz was subpoenaed to the Santa Ana, California federal court to testify in the case of Chi Mak, who was convicted of providing United States Navy technology to China.

[7] Gertz was a senior editor at the Washington Free Beacon until October 2019, when he was fired upon the discovery of "a previously undisclosed financial transaction.

[12] In 1997 he reported on Russian aid to Iran's nuclear weapon program, based on information given him by the Israeli intelligence agency Mossad.

[14] In 2004, Gertz wrote that Syria, possibly with the aid of Russian troops, transferred Iraqi weapons of mass destruction stockpiles to its own military installations.