China accuses US of 'provocation' after near collision of warships

China's defense minister on Sunday accused the United States and its allies of trying to destabilize the Indo-Pacific - just hours after warships from the two countries were involved in a near collision.

In a combative speech to the Shangri-La Dialogue security summit in Singapore, Li Shangfu accused the US of "provoking bloc confrontation for self-interest" and said Washington and its allies were making up rules to assert dominance over the region.

He also warned that any "severe confrontation" between the US and China would be "an unbearable disaster for the world."

Li's warning came a day after US Defense Secretary Lloyd Austin told the same forum a war over Taiwan would be "devastating" and affect the global economy "in ways we cannot imagine."

And it came just hours after the US accused a Chinese warship of cutting in front of an American vessel that was taking part in a joint exercise with the Canadian navy in the Taiwan Strait, forcing the American vessel to slow down to avoid a collision.

Questioned after his speech on the incident, Li said the US naval presence in the strait was an example of Washington creating chaos in the region.

"They are not here for innocent passage, they are here for provocation," Li said of US warships.