martin fletcher has more on the rise in tensions from tel aviv. >> reporter: israel is bracing for an attack. airplanes upped the ante, when officials from the united states and the region says israeli war planes did attack a syrian convoy with lebanon, which was reportedly carrying anti-aircraft rockets, russian-made s.a.m.-17s which would have changed the balance of power. israel's fear was syria was transferring them to hezbollah, and that would have taken away israel's freedom to operate in the skies of lebanon. reportedly another attack by israel yesterday against a weapons development plant northwest of damascus, which apparently was for a long time been on israel's attack list. it's where syria is believed to be developing non-conventional weapon. israel is ready for an attack, syria and hezbollah have been threatening in the past that they would attack if they were attacked by israeli war planes. iran also in the equation, but for the time being, calm in israel. martin fletcher, nbc news, tel aviv. >>> the chinese government says it had nothing to do with attacks on computers