The Russians for at least since last year have been concentrating on developing a system making it possible to install the missiles on aircraft of the Su-27 and Su-35 types (an aircraft type of such a missile weighs 2.5 tons). So, these Su planes can carry up to three missiles each and use them against both naval and coastal targets. #msg-6509467
Given the following and the fact that many other countries have the Sunburn, the precursor of the ONYX, I think maybe Venezuela and Cuba have the ONYX albeit possibly on another type of plane other than the Venezuelan MIG 29 SMTs.
This apparently is what Australia is afraid of and one reason for the Aegis systems.
Sukhoi" Present New Strategic Risk For Australia
Used as bombers, Flankers could be armed with AGM-142 equivalent standoff weapons such as the Raduga Kh-59M, GBU-15 equivalent TV guided bombs like the GNPP KAB-500/1500Kr. Flankers could also carry Harpoon-clone anti-ship missiles such as the Zvezda Kh-35U and unique weapons like the Zvezda Kh-31 Krypton family of long range ramjet anti-radiation missiles, or the massive supersonic sea- skimming Raduga Kh-41 Moskit/Sunburn and MBRPA Kh-61 Yakhont anti-shipping misiles. As such, the Su-30s provide robust precision strike, defence suppression and sea control capabilities. China is building up a force of 350 – possibly up to 500, rivalling in size the US F-15 fleet. #msg-6413560
May 23, 2005 The Pentagon Monday announced the possible sale of three Aegis naval weapons systems to Australia, saying it would increase the ability of the US and Australian navies to operate together.
Aegis systems are centered on a sophisticated computerized command system that can cue air defense missiles to enemy missiles and aircraft detected by targeting radar. Using its AN/SPY-1 phased array radar, it can track over a hundred targets simultaneously. #msg-6451627