RIYADH—The Saudi-led coalition fighting the Iran-aligned Houthi group in Yemen said on Sunday that the Houthis have fired 430 ballistic missiles and 851 armed drones into Saudi Arabia since the war started in 2015, killing 59 Saudi civilians. The spokesman of the Saudi alliance, General Turki al-Malki, said the Iran-aligned movement had been using Sanaa airport as a base to launch attacks on the kingdom, an allegation the Houthis deny. The conflict is largely seen as another proxy war between Middle East rivals Saudi Arabia and Iran. Malki shared videos with reporters which he said showed military advisers from the Iran-backed Lebanese terrorist group Hezbollah, helping the Houthis in Yemen. Hezbollah and the Houthis deny that the Islamist terrorist group has a role in the war. Yemen has been mired in violence since 2014 when the Houthis took over the capital Sanaa and ousted Yemen’s internationally recognised government of Abd-Rabbu Mansour …