By Harriet Sherwood in Jerusalem and agencies, guardian.co.uk, 31 Jan. 2013

Russian foreign ministry says reported attack would violate UN charter and can not be justified

Also see:

Israeli warplanes carry out air strike on Syria
By Harriet Sherwood in Jerusalem, The Guardian, 30 Jan. 2013

Attack confirmed by Syrian regime comes after Israel aired suspicions of weapons convoys heading to Lebanon

And:

Israeli Airstrike in Syria Targets Arms Convoy, U.S. Says
By Isabel Kershner and Micheal Gordon, New York Times, Jan. 31, 2013

JERUSALEM — Israeli warplanes carried out a strike deep inside Syrian territory on Wednesday, American officials reported, saying they believed the target was a convoy carrying sophisticated antiaircraft weaponry on the outskirts of Damascus that was intended for the Hezbollah Shiite militia in Lebanon.

Highlighting the diplomatic and regional stakes, the attack prompted both Russia and Hezbollah to offer support in varying degrees on Thursday for President Bashar al-Assad.

The American officials, who spoke on the condition of anonymity, said Israel had notified the United States about the attack [.....]