i)it allowed the US to use its facilities to attack Iran's oil terminals back in the '80s, and the Iranians retaliated by attacking some of their terminals;
ii)they assisted us in Gulf War I;
ii)they assisted us after 9/11 and throughout the war in Iraq.
I'm not saying we ought not to be cautious. And as others have noted, Bush's failure to even address let alone do something about border security doesn't inspire confidence. But if we start treating all Arabs as enemies than we will have a much bigger war on our hands than we have. While I ackowledge the satisfaction the clarity of such an outcome would provide, I doubt is good policy.
The UAE does not recognize Israel. Among other things but the point is...there's incentive THERE (UAE) to do harm. It's nice they've committed and agreed to certain conditions but they also are just as likely to commit and agree to other conditions if the terms are right.
The UAE also recognizes the Taliban as the rightful government of, what, Iran, while it does not recognize Israel. I'm sorry but I perceive the opportunity for disaster here.