More on the big story that has everyone so tight-lipped. On September 6, the Israeli Air Force bombed a site in Syria. But why and what?

Israel had been surveying the site for months, according to Washington and Israeli sources. President George W Bush was told during the summer that Israeli intelligence suggested North Korean personnel and nuclear-related material were at the Syrian site.

Israel was determined not to take any chances with its neighbour. Following the example set by its raid on an Iraqi nuclear reactor at Osirak 1981, it drew up plans to bomb the Syrian compound.

But Washington was not satisfied. It demanded clear evidence of nuclear-related activities before giving the operation its blessing. The task of the commandos was to provide it.

So Israeli commandos went into Syria dressed as Syrian military, got the necessary proof and, apparently, Bush gave the Israelis the nod.

Today the site near Dayr az-Zawr lies in ruins after it was pounded by Israeli F15Is on September 6. Before the Israelis issued the order to strike, the commandos had secretly seized samples of nuclear material and taken them back into Israel for examination by scientists, the sources say. A laboratory confirmed that the unspecified material was North Korean in origin. America approved an attack.