Former Pentagon chief Jim Mattis says Trump trying to 'divide' America

'We must reject any thinking of our cities as a 'battlespace', he says.

WASHINGTON:

After long refusing to explicitly criticise a sitting president, former Defense Secretary Jim Mattis accused President Donald Trump on Wednesday of trying to divide America and roundly denounced a militarization of the US response to civil unrest.

Protests have erupted around the United States since the death on May 25 of unarmed black man George Floyd in Minneapolis police custody.

"Donald Trump is the first president in my lifetime who does not try to unite the American people — does not even pretend to try," Mattis, who resigned as Trump's defence secretary in 2018, wrote in a statement published by The Atlantic.

"Instead he tries to divide us. We are witnessing the consequences of three years of this deliberate effort."

He drew a comparison to the US war against Nazi Germany, saying US troops were reminded before the Normandy invasion: 'The Nazi slogan for destroying us … was 'Divide and Conquer.'"

Mattis, a retired Marine general who denies political ambitions, also took a swipe at current US military leadership for participating in a Monday photo-op led by Trump after law enforcement -- including National Guard -- cleared away peaceful protesters.

He criticised use of the word "battlespace" by Defense Secretary Mark Esper and Army General Mark Milley, chairman of the Joint Chiefs of Staff, to describe protest sites in the United States.

"We must reject any thinking of our cities as a 'battlespace,'" Mattis wrote.

Trump's threats to deploy active duty troops -- even in states that oppose their use -- has stirred alarm within the US military and in Congress, where a top Republican warned it could make troops "political pawns."

"Militarizing our response, as we witnessed in Washington, DC, sets up a conflict — a false conflict — between the military and civilian society," Mattis wrote.