Rubio called China the "most potent, dangerous adversary" during his confirmation and is expected to work with India, Japan, and Australia to counter this.

The meeting, bringing together representatives of the four largest militaries in the Indo-Pacific, was a clear signal that the Trump administration will intensify military preparations and threats directed at China.

Marco Rubio told State Department employees that changes under President Trump “are not meant to be destructive, they’re not meant to be punitive.”

U.S. officials say the Trump administration would begin formal international engagements this week when Marco Rubio — expected to be confirmed soon as secretary of state — meets with the foreign ministers of India,

U.S. Secretary of State Marco Rubio clashed with his Chinese counterpart, Wang Yi, over Taiwan, with the top U.S. diplomat denouncing Beijing's 'coercive' moves.

U.S. President Donald Trump is back with an administration led by "America First" policies, and the independence of Japanese diplomacy is being put to the test. An international rules-based order must be protected without fail to ensure the stability of Asia.

Foreign Minister Takeshi Iwaya and new U.S. Secretary of State Marco Rubio also agreed on the importance of trilateral cooperation with South Korea and others.

Secretary of State Marco Rubio has met with his counterparts from Australia, India and Japan as the Trump administration kicks off its formal foreign policy engagements in discussions with the Indo-Pacific “Quad.

The U.S. Secretary of State Marco Rubio and Japanese Foreign Minister Takeshi Iwaya addressed issues regarding North Korea's alignment with Russia and China's support for Russia's defense industry during their discussions,

Secretary of State Marco Rubio issued a not-so-subtle warning to China over its actions at sea, vowing together with US allies to counter its assertiveness.

The Senate voted unanimously to confirm Sen. Marco Rubio's as secretary of state on Monday, making him the first member of President Donald Trump's second Cabinet.