President-elect Donald Trump has picked Republican Representative Mike Waltz to be his national security adviser, two sources familiar with the matter told Reuters on Monday, tapping a retired Army Green Beret who has been a leading critic of China, Paralel.Az reports citing Reuters.

Waltz, a Trump loyalist who also served in the National Guard as a colonel, has criticized Chinese activity in the Asia-Pacific and has voiced the need for the United States to be ready for a potential conflict in the region.

The national security adviser is a powerful role, which does not require Senate confirmation. Waltz will be responsible for briefing Trump on key national security issues and coordinating with different agencies.

While slamming the Biden administration for a disastrous withdrawal from Afghanistan in 2021, Waltz has publicly praised Trump's foreign policy views.

"Disruptors are often not nice ... frankly our national security establishment and certainly a lot of people that are dug into bad old habits in the Pentagon need that disruption," Waltz said during an event earlier this year.

"Donald Trump is that disruptor," he said.

Waltz has a long history in Washington's political circles.