Will Obama shoot down Israeli planes over Iraq?

Should Israel, because of Obama’s inept handeling of Iran’s nuclear developments, decide that it must take-out Iran’s’ nuclear capabilities, it would likely use nuclear weapons delivered by sea, and by air. Those delivered by air would require flying over Iraq, an air-space controlled by the United States. Would Barak Obama instruct the US military to shoot down planes of his only true ally in the Middle East?

President Mubarak of Egypt already demonstrated that his country would allow Israeli submarines passage to the Arabian/Persian Gulf from where they are likely lob missiles into Iran, would Mubarak prove to be a better ally of Israel, and the Western community of nations, than the United States under Obama?