U.S. warns citizens against risks of travel to Saudi Arabia

The U.S. State Department on Tuesday warned citizens to "consider the risks" when traveling to Saudi Arabia due to militant threats and the threat of ballistic missile attacks on civilians by rebels in Yemen.The warning comes two weeks after U.S.-allied Saudi Arabia said it had shot down a ballistic missile fired by Iran-aligned Houthis from Yemen towards the Saudi capital Riyadh.The missile, which the Houthis said was in response to Saudi-led air strikes on civilians in Yemen, was shot down nea