“If we ignore them, I am sure they will reach Europe in a month and America in another month,” he said in remarks quoted on Saturday by Asharq al-Awsat daily and Saudi-backed Al-Arabiya television station.

“Terrorism knows no border and its danger could affect several countries outside the Middle East,” said the king who was speaking at a welcoming ceremony on Friday for new ambassadors, including a new envoy from Saudi ally the United States.