China has also stepped up its presence near the disputed Scarborough Shoal, which lies within the Philippines’ maritime zone, after unilaterally declaring a “nature reserve” over much of the feature—drawing strong protests from Manila, Washington and several other U.S. allies.

China's rapid progress in developing and launching space systems like satellites and its work on counter-space weapons has US officials concerned.

Washington’s engagement with Beijing at the military level, where it will now be in talks with the Chinese military, will be watched with some concern in capitals of the region, especially in Delhi, Tokyo and Canberra.

The task force aims to enhance interoperability and crisis responses of American and Filipino troops, particularly in the disputed sea.

The Philippines’ top defense official called for deeper military ties with the US in a bid to face down mutual threats amid worsening relations with Beijing.

The United States and the Philippines have formed a new joint task force to strengthen cooperation and increase military readiness in areas including the South China Sea, the Pentagon said on Friday.