RIYADH, Saudi Arabia (AP) -- King Abdullah's comments come as the Islamic State group has seized wide swaths of land across Syria and Iraq.
While not mentioning any terrorist groups by name, Abdullah said that he is "certain that after a month they will reach Europe and, after another month, America."
The king's comments late Friday appeared aimed at drawing Washington and NATO forces into a wider fight against extremists in the region. Saudi Arabia has backed rebels fighting in Syria, but is concerned that extremists there could turn their weapons on the kingdom.
State media carried the king's comments to foreign ambassadors early Saturday.