[SunStar]

I think the burden is on the US and UK because we are the ones who made the accusation, and we are the ones searching for the weapons of mass destruction. Why would the burden be on Saddam Hussein and/or the neighboring Arab countries?

The accusations have been made by the UN since 1991. The US and UK have acted on behalf of the UN. It was a UN member state, Iraq, who obfuscated, obstructed, and disobeyed the UN for 12 years, not the US or UK. And, since the weapons have most likely been hidden in neighboring Arab countries, that's where we should look.