WASHINGTON, Jan 21 (Reuters) - There needs to be a de-escalation in the conflict between a Saudi-led military coalition and the Iran-aligned Houthi group in Yemen, U.S. Secretary of State Antony Blinken said on Friday following air strikes that killed scores of people. read more "The escalation in fighting only exacerbates a dire humanitarian crisis and the suffering of the Yemeni people," he said in a statement released by the State Department.