By Patricia Zengerle, Daphne Psaledakis and Simon Lewis WASHINGTON (Reuters) - U.S. Secretary of State Marco Rubio defended President Donald Trump's steep cuts to the foreign aid and diplomatic budgets on Tuesday in his first testimony as the country's top diplomat to his former colleagues in Congress,

Secretary of State Marco Rubio on Tuesday mounted a vociferous defense of the Trump administration’s foreign policy, as he clashed with Senate Democrats who accused him of abandoning his principles, trampling on the Constitution and allowing children in Africa to starve — all in service to President Donald Trump,

Secretary of State Marco Rubio and Democratic senators have sparred over a wide range of the Trump administration’s foreign policies: Ukraine and Russia, the Middle East, Latin America, the slashing of the U.