China warns Philippine-US base deal...

region,” foreign ministry spokeswoman Mao Ning said.

“The result will inevitably be increased military tension and endangering regional peace and stability,” she added.

Longtime treaty allies Manila and Washington agreed in February to expand cooperation in “strategic areas” of the Philippines as they seek to counter Beijing’s growing assertiveness over self-governed Taiwan and China’s construction of bases in the South China Sea.

The 2014 Enhanced Defense Cooperation Agreement, known as EDCA, gave U.S. forces access to five Philippine bases.

It was later expanded to nine, but the locations of the four new bases were withheld until Monday while the government consulted with local officials.

The four sites had been assessed by the Philippine military and deemed “suitable and mutually beneficial”, the Presidential Communications Office said in a statement Monday.

The U.S. Department of Defense confirmed that the locations announced were the four new EDCA sites.

It also said in a statement it would