New U.S. Secretary of State Marco Rubio discussed China's "dangerous and destabilizing actions in the South China Sea" with his Philippine counterpart on Wednesday and underscored the "ironclad" U.S.

The US secretary of state opens his term by reaffirming Washington’s commitment to the Philippines and other regional allies.

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.

Secretary of State Marco Rubio said the US remained committed to the Philippines' defense as tensions simmer with Beijing in the South China Sea.