Bin Laden actually doesn't plan 9/11 in this instance. One of his biggest pet peeves was the presence of US military (and woman!) in a nation that holds the 2 holiest cities in Islam. He's still a radical, still anti-American (US supports Israel after all), but he's not going to be to the point where he feels a need to do 9/11, his focus will be on Israel, and ironically- Iraq. Iraq under Hussein was secular, anti-Wahhabi, and a threat to Saudi Arabia. He may also be anti-Iranian given Iran's designs on Persian Gulf domination which is a direct threat to Saudi Arabia. It's possible that Iraq, if it does or doesn't invade Saudi Arabia, becomes embroiled in a three-way cold war over Persian Gulf domination. Almost certainly the US and Europe still embargo Iraq and cause it to not be able to sell as much oil as it could have, making occupying Kuwait not pay for itself. Israel is in a much better position to bomb Iraq at will. OTL Jordan and Yemen were the only two nations to lend any support to Iraq, it's possible Iraq and Jordan try unification for a second time. In which case does Iran, with their satellite of Syria, find Iraq enough of a threat to intervene on two fronts? And if so, what do the Kurds do? Iran and Syria have some to lose in the case of a Kurdish uprising and probably don't want to see it, same with Turkey. Israel sits back and lets them fight it out and intervenes with airstrikes against anyone who gets chemical or nuclear programs too far. A Middle East without US troops on the ground is actually safer for Israel because US troops in Saudi Arabia and Iraq starting in 1990s hamper Israel's choices to deal with such technological advances by Arab nations resulting in more covert activities of computer viruses and such.