??? You mean Iran? Iran has been under the same political regime (Islamic republic with a kind of partially democratic system with elections and all) since 1979. Iraq was ruled by the same guy (Hussein) since 1979. Pakistan has been periodically oscillating between military dictatorship and civilian "democratic" rule ever since its creation in 1947... By the way, Pakistan is also an Islamic republic, and Islamic extremists have been extremely active in its territory... If Ben Laden is still alive, there's a pretty good chance he is hiding in Pakistan.
Iran as well.
Iraq started with a monarchy which was overthrown by the military in 1958.
The next government was overthrown again in 1963. The Ba'ath's party overthrew that in 1968. And in 1979 Hussein took became "president". Stable indeed.
He tried to invade Iran and then he invaded Kuwait (iran and Pakistan haven't recently) and he stole billions through your beloved UN.
Just because Bin Laden may or may not be in Pakistan doesn't mean they want him there. Does your government always catch the bad guys?
PS: I think you put too much faith in the UN. Remember the League of Nations? Let us also not forget the USA pays 90% of the UN's bills.