According to Bush and his people, a great deal of the materials were in
populated areas which are well watched. Where are they now? .

It was hidden or poured down the river.

Where are the warheads?

They already found 20 different piles of warheads. Watch the news.

Where are the millions of gallons of nerve agents?

Nobody ever said there were millions of gallons. Secondly experts believe
the stuff was poured in the river. Read the paper/watch the news.

Most importantly, if Saddam had all of the deadly stuff, why didn't he
lay
waste to the US troops with it???

That question was already answered a long time ago. He couldn't use the
stuff because he was trying to get world opinion on his side. Read the
paper/watch the news.
S/V Express 30 "Ringmaster"
Trains are a winter sport