As the world's attention turned towards Washington and Donald Trump's inauguration, the Pentagon was operating decisively under the radar Days before Donald Trump's inauguration, Washington quietly deployed an aircraft carrier strike group to the disputed South China Sea and staged secretive naval drills with the Philippines.

A Philippine security official says China is “pushing us to the wall” with growing aggression in the disputed South China Sea and warned that “all options are on the table” for Manila’s response, including new international lawsuits.

The Philippines and China agreed to seek common ground and find ways to cooperate despite their disagreements in the South China Sea, their foreign ministries said on Thursday, as heated rows persist over vessels deployed around disputed features.