The White House on Thursday confirmed that earlier in the day it had fully briefed congressional committees on last year's Israeli air strike on a suspected nuclear facility deep inside Syria.
The US administration noted in its statement that evidence presented at the briefing had pointed to North Korean involvement in setting up and managing the clandestine nuclear facility, and that the reactor appeared designed for the sole purpose of producing plutonium for use in nuclear weapons.
The evidence presented to congressional leaders, including secret video footage and photographs, is believed to have been collected by undercover Israeli agents.
Acting on that intelligence, a squadron of Israeli jets infiltrated deep into eastern Syria on September 6, 2007 and destroyed the facility.
According to reports from Thursday's closed-door briefing, senior American intelligence officials said the Syrian reactor was just weeks, or at most months, away from going online.
Israel, which continues to refuse to comment on the air strike itself, expressed concern that the public revelations in Washington could provoke Syria to reconsider a military retaliation against the Jewish state.
On the other hand, Israeli analysts cited by The Jerusalem Post said the US briefing would bolster Israel's deterrence by highlighting its operational capabilities.