REPUBLIKA.CO.ID, MANILA -- The United States and the Philippines will double the size of their annual war games this month, with some exercises to be staged close to a South China Sea flashpoint, the Filipino military said Monday.

The 10-day exercises between the long-time allies will be held as fears grow in the Philippines that China is seeking to take control of the strategically vital and resource-rich sea.

Nearly 12,000 soldiers will be involved in this year's edition in several locations in the Philippines, including a naval station directly facing the disputed waters, military spokesman Lieutenant Colonel Harold Cabunoc said.

That number, which includes 6,600 American troops, compares with a total of 5,500 soldiers who participated in last year's Balikatan (shoulder-to-shoulder) exercises, Cabunoc said.

He emphasised the expanded war games highlighted the deepening military alliance between the Philippines and its former colonial ruler.

"The higher strength of Balikatan 2015 for this year only reflects the Philippines' and the United States' growing commitment to enhance our capability to conduct joint military and non-military activities," Cabunoc said.

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