Washington (CNN)–President Obama is staying "in the family" to fill another vacancy in the White House.
Denis McDonough, who has been one of his most trusted advisors and is a full time resident of the president's tight inner circle, is being tapped as deputy national security advisor.
"He possesses a remarkable intellect, irrepressible work ethic, and a sense of collegiality that has earned him the respect of his colleagues," the President said in a statement. He added that McDonough will be "indispensable" to the national security team as the administration continues to "protect the American people, and advance American interests and values around the world."
McDonough, who has been serving as chief of staff to the National Security Council (NSC) will also have the title of assistant to the president.
He'll be working under newly named National Security Advisor Tom Donilon.
"I could not ask for a better colleague," Donilon said. "I look forward to continuing to work with Denis and our talented and hard-working National Security Staff as we carry forward our effort to advance a safer, stronger, and more prosperous America."