An update from Defense Tech:
All of this makes perfect sense, save one thing. Why the secrecy? If the Syrians have nuclear facilities, the Israelis should be delighted to make it public. Frankly, so should the United States, since the Bush administration has always argued that nuclear proliferation to rogue states, including Syria, is one of the key problems in the world. The Syrians should be spinning the story like crazy as well, denying the nuclear program but screaming about unprovoked Israeli-U.S. aggression. The silence from one or two parties makes sense. The silence from all parties makes little sense.
Whether the Israelis found out about the material through their own intelligence sources or North Korea provided a list of recipients of nuclear technology to the United States is unclear. The Israelis have made every effort to make it appear that they knew about this independently. They also have tried to make it appear that they notified the United States, rather than the other way around. But whether the intelligence came from North Korea or was obtained independently, Washington wants to be very careful in its handling of Pyongyang right now.