A senior Saudi Arabian diplomat and member of the ruling royal family has raised the spectre of nuclear conflict in the Middle East if Iran comes close to developing a nuclear weapon. Prince Turki al-Faisal, a former Saudi intelligence chief and ambassador to Washington, warned senior Nato military officials that the existence of such a device "would compel Saudi Arabia … to pursue policies which could lead to untold and possibly dramatic consequences". He did not state explicitly what these policies would be, but a senior official in Riyadh who is close to the prince said yesterday his message was...