GOP presidential front-runner Donald Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE has named Sen. Jeff Session (R-Ala.) as chairman of his national security advisory committee, according to ABC News.

NEW: Donald Trump announces @SenatorSessions, who endorsed him last weekend, as Chairman of National Security Advisory Committee. — ABC News Politics (@ABCPolitics) March 4, 2016

ADVERTISEMENT

Thursday’s decision follows Sessions publicly backing Trump last weekend, giving the outspoken billionaire his first Senate endorsement.

“I told Donald Trump this isn’t a campaign, this is a movement,” he said during a surprise appearance in Huntsville, Ala., last Sunday.

“I believe that the movement is afoot – that must not fade away,” the Tea Party darling added. "It has the potential to have the American people’s voices heard for a change.”

Sessions is the latest name beefing up the Trump campaign’s national security credentials as the real estate tycoon cements his place as the Republican standard-bearer.

Trump’s campaign announced last Monday that it had also added Cmdr. J.D. Gordon, a former Pentagon spokesman and foreign policy adviser for former Gov. Mike Huckabee (R-Ark.).

Gordon served four years with Defense Secretaries Donald Rumsfeld and Robert Gates. He also enlightened unsuccessful GOP presidential candidate Herman Cain on international affairs in 2012.

Trump won voting contests in seven out of 11 states earlier this week on Super Tuesday, increasing his odds of securing the Republican presidential mantle before next November.

He leads his three remaining rivals by about 16 percent voter support nationwide, according to the latest RealClearPolitics average of polls.

Trump has faced repeated criticism that he lacks the foreign policy experience the presidency requires given his business background. The billionaire has countered he is a masterful negotiator and can assemble an administration capable of handling the nation’s interests abroad.