White House officials defended President Donald Trump's move to give top political strategist Stephen Bannon a permanent spot on the National Security Council while limiting the role of the director of national intelligence and the chairman of the Joint Chiefs of Staff.

"We are instilling reforms to make sure that we streamline the process for the president to make decisions on key, important intelligence matters," White House press secretary Sean Spicer said Sunday.

In a presidential memorandum issued Saturday, Bannon, 63, a former executive at Breitbart News, was given a permanent spot on the NSC's principals committee, the senior-level interagency group that considers major national security policy issues. Others with permanent seats on the White House policy council include the secretary of state and secretary of defense.

Under the new policy, however, the director of national intelligence and the chairman of the military's Joint Chiefs of Staff will attend only "where issues pertaining to their responsibilities and expertise are to be discussed," according to the memo. Both were permanent members under President Barack Obama, but had a similar ad hoc status under President George W. Bush.

Republican Sen. John McCain, chairman of the Armed Services Committee, said Sunday he was concerned that adding Bannon to the council while leaving out Marine Gen. Joseph Dunford, chairman of the Joint Chiefs, was a "radical ­departure."

The changes also drew sharp criticism from Obama's national security adviser, Susan Rice, who said in a Twitter message that the moves were "stone cold crazy."

"Who needs military advice or [intelligence] to make ­policy on ISIL, Syria, Afghanistan, DPRK?" she chided.

Rice also criticized aspects of the order that would let Vice President Mike Pence chair meetings of the council in lieu of the president.

Spicer called her criticism "clearly inappropriate" and said "the president gets plenty of information from the chairman of the Joint Chiefs of Staff."

The changes were intended to "modernize the National Security Council so that it is less bureaucratic and more focused on providing the ­president with the intelligence he needs," Spicer said.

The White House spokesman also defended Bannon's inclusion, saying the aide was a "former naval officer" with a "tremendous understanding of the world and the geopolitical landscape that we have now."

He has become one of Trump's most trusted — and most contentious — advisers for his ability to channel the populist and nationalist sentiment that helped Trump win.