Someone who did know what he was talking about on Iraq-so of course he was ignored by the Bushites:

It was a few weeks before the invasion of Iraq, three years ago. I was interviewing the Saudi Foreign Minister, Prince Saud al-Faisal, in the ballroom of a big hotel in Cairo.

Shrewd, amusing, bulky in his superb white robes, he described to me all the disasters he was certain would follow the invasion.

The US and British troops would be bogged down in Iraq for years. There would be civil war between Sunnis and Shias. The real beneficiary would be the government in Iran.

"And what do the Americans say when you tell them this," I asked? "They don't even listen," he said.

http://news.bbc.co.uk/1/hi/world/middle_east/4894148.stm