https://amgreatness.com/2025/05/09/what-president-trump-needs-in-his-next-national-security-adviser/
President Trump’s decision to remove Michael Waltz as his National Security Adviser (NSA) came as no surprise to Trump administration watchers who knew a change was coming. The president’s decision to nominate Waltz as UN ambassador was a classy way of taking care of a loyal supporter and decorated Army veteran who didn’t work out in a critical administration post.
Waltz’s ouster reflects how Trump runs the presidency as a business: he will not hesitate to replace officials who are not performing to his satisfaction or have lost his confidence. I expect Trump to be ruthless in managing top staff in his second term, as he has little time to enact an extremely ambitious agenda to take back our country.
By contrast, Joe Biden did not fire or replace any senior official in his four years as president. Notably, Biden failed to fire anyone after the disastrous U.S. withdrawal from Afghanistan, one of the worst foreign policy blunders in American history.
Trump added the acting NSA job to Secretary of State Marco Rubio’s portfolio. This is reportedly a temporary arrangement that could last six months.
The decision to dual-hat Rubio in these top national security posts was a sign of Trump’s confidence and trust in the former Florida senator. (Rubio is actually “quad-hatted”—he also serves as acting administrator of the U.S. Agency for International Development and acting head of the National Archives and Records Administration.) However, as much as I respect Rubio and his capabilities, this is not an ideal situation due to the pressing responsibilities the Secretary of State must perform as America’s chief diplomat and the duties of the National Security Advisor, who serves as the top national security aide to the president and must be available to him 24/7.
Based on my experience as the National Security Council Chief of Staff and discussions with people inside and outside the Trump administration, I have come up with the following recommendations on what the president should look for in his next NSA. (I have a few more suggestions that I will pass to the president’s team privately.)