The Pentagon has fired the United States' chief military strategist over a possible leak of classified data, - ABC News Lt. Gen. Brett Silvia served for 11 months as director of strategy, planning and policy at the Joint Chiefs. According to the media, he is suspected of passing secret information to journalists about the US war in Iran and Russia's war against Ukraine. Pentagon chief Pete Hegseth fired the general for a "serious breach of discipline" and loss of trust.