US says China's sea claims have 'no basis' in international law

US Secretary of Defense Lloyd Austin speaks during the 40th International Institute for Strategic Studies (IISS) Fullerton lecture in Singapore on July 27, 2021.
AFP/Roslan Rahman

SINGAPORE, Singapore — Pentagon chief Lloyd Austin said Tuesday that Beijing's expansive claims in the South China Sea have "no basis in international law", taking aim at China's growing assertiveness in the hotly contested waters.

Austin's broadside came at the start of his first trip to Southeast Asia as US defense secretary, as he seeks to rally allies in the region as a bulwark to China.

President Joe Biden's administration wants to reset relations with Asian countries and build alliances to face Beijing, after the turbulence and unpredictability of the Donald Trump era. 

Speaking in Singapore, Austin criticised China's actions in the disputed sea, where Beijing has overlapping territorial claims with several Southeast Asian states. 

"Beijing's claim to the vast majority of the South China Sea has no basis in international law," he said in a speech hosted by the International Institute for Strategic Studies think-tank.

"That assertion treads on the sovereignty of the states in the region," he said, adding that the US will support countries in defending their rights.

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The US "will not flinch when our interests are threatened," Austin said -- but he insisted Washington does "not seek confrontation" with China.

"I am committed to pursuing a constructive, stable relationship with China, including stronger crisis communications with the People's Liberation Army."

China claims almost the entire resource-rich sea, through which trillions of dollars in shipping trade passes annually, with competing claims from Brunei, Malaysia, the Philippines, Taiwan and Vietnam.

'Stabilising force'

Beijing has been accused of deploying a range of military hardware including anti-ship missiles, surface-to-air missiles and electronic jammers across the contested waters. 

It has also built up islets and other maritime features into hardened military facilities.

Tensions have escalated in recent months between Beijing and rival claimants. 

Manila was angered after hundreds of Chinese boats were spotted inside the Philippines' Exclusive Economic Zone, while Malaysia scrambled fighter jets to intercept Chinese military aircraft that appeared off its coast.

US warships also conduct regular "freedom of navigation" operations in the sea, further stoking tensions between Washington and Beijing.

After Singapore, Austin will visit Vietnam and the Philippines, and will be seeking to underline that the US is a "stabilising force" in Southeast Asia, said a senior defence official.

A booming region home to more than 650 million people, Southeast Asia has become a key battleground for influence between the US and China.

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