Rubio -- long known as a Russia and China hawk in the Senate -- has been accused of dialing back his interventionist foreign policy approach to align with Trump's positions and may face fresh criticism from opponents who believe he might prioritize serving as a yes man to president over serving the country.

Secretary of State Marco Rubio began his tenure as the top U.S. diplomat on Tuesday by pledging to keep his department at the heart of U.S. foreign policymaking and execute what he said was President Donald Trump's aim of promoting peace through strength.

Marco Rubio was overwhelming confirmed by the Senate as secretary of State to Donald Trump. He becomes the global face of Trump's foreign policy.