In 1987, Persia & Arabia came to blows at Mecca in the <PERSON> clash with Saudi security. A number of Shia pilgrims die in the cross fire. <PERSON> calls for <PERSON> to avenge the pilgrims' deaths by overthrowing the Saudi royal family. KSA severs ties with Iran, accusing their <PERSON> neighbors of plotting to take down the royal house of <PERSON>.