Because invading wasn’t about getting Osama but setting up another hub in the Middle East. Getting Osama was like a footnote of the wider plans for the region, a PR win, that was it.Where's the evidence? Why did they invade it instead of proving?
We wouldn’t have wanted them to just give us Osama anyway. Whats more of a win, the terrorist group giving him up or us raiding a compound and killing him in the night? (Lets not even get into if thats true or not , just take it as if it is)