The author's lack of historical knowledge shows. Israel and the US were certainly no allies in 1967.They were, although they kept up a pretense of neutrality. The US viewed the six day war as a proxy war with the US proxy(Israel) against soviet proxies(Syria, Jordan and Egypt). The US kept a carrier battle group to defend Israel in case they started to lose. The soviets didn't like it and almost caused WWIII. Read this if you don't believe me.
[McNamara:] We had had a carrier group in the Med and fairly close to Israel, and we'd sent it on a training exercise toward Gibraltar. And then we thought the situation was so tense in Israel that perhaps the Syrians, fearing Israel would attack them, or the Russians supporting the Syrians might wish to redress the balance of power and might attack Israel. So we turned the carrier group around and sent it back toward Israel, not with any intention whatsoever of supporting an Israeli attack on Syria, or any Israel offensive moves whatsoever, but rather purely to be able to defend Israel in the event of further attacks on Israel.