Defense sources told Haaretz Israel must be cautious and avoid embarrassing Syrian leader Bashar Assad.

This week, Washington released details of the Sept. 6 airstrike and members of Congress were shown a video reputedly recorded by an agent inside the nuclear site prior to the attack.

However, Israeli Defense Minister Ehud Barak is reportedly opposed to releasing any new details on the attack or the nuclear ties between Damascus and Pyongyang, as he claims that would escalate tensions with Syria.

Meanwhile, as part of North Korea's nuclear dismantlement process, Pyongyang must declare any proliferation activities it was involved in, although talks have stalled over the North's silence about allegedly aiding Syria, the report said.