Oh I was under the impression that the VAF bought Su-27s. Su-30s are a different story. They are certainly congratulating themselves on that decision now. Although it is unknown how many missles, etc. that the Russians provided in the deal.
Su-30MK2. Not as advanced as MKI, but it wouldnt matter much in that case. Besides, even Su-27 would be able to employ same full range of A-G ammunition (i mean, Su-27 would be at least upgraded to cheap SM level before shipping).
This incident will end up hurting Chavez more than it helps him, no matter what happens. He'll look like a fool and a warmonger, and weak too (if he fights he'll lose if the US intervenes which is probable, and if he backs down he backs down). People in South America who gravitated toward him are going to be repelled by this (his popularity internationally was already slipping quite a bit).
This is very tricky and i wouldnt be as certain. Such behavior certainly will hurt Chavez in the eyes of West - but to tell the truth, West already dont like him
On the other hand, Chavez would gain point among some other South America nations, some other anti-West countries, and what much more important - in internal politic.
The fact that Venezuela made that weapons deal with Russia and only a short while later Chavez went and caused this issue (because his response is what did it, not the raid) just shows me that when he bought those weapons he was itching to use them.
I think "use" not necessary active bombing - i think "use" more like sabre rattling and threat postures.
P.S. Columbia is no holy land either. In fact, i dont think many peoples in South America like Colombia, rather quite contrary. Thats why Chavez may actually gain points - while forcing USA losing points openly defending Columbia.