What exactly is the Islamic Bloc's strategy, here? The FACs in Earth orbit could mess up the EDA pretty good, but they'd destroy themselves in the process with the ecological damage and radiation, and unlike the EDA they've got nowhere to evacuate to. They're not much good as a deterrent, either, since the meson cannons on the EDA's PDCs could off them in job lots at that range.
The Islamic Block has the problem that in comparison to the EDA they haven't even got out of the blocks as far as technology is concerned and they suffered the most under the Intruder bombing. The aim is to deter the EDA by a building lots of cheap units, so that some will survive long enough to launch, and thus could hurt the EDA and the planet, coupled with a substantial ground force (they currently have eight brigades and in ground unit strength are not too far off the EDA). If the EDA start using meson beams to take out the FACs they have their own bases to take out the EDA PDCs. If the EDA meson bases take out the Islamic meson bases there is time for the missile bases and FAC to launch. Their great Achilles heel is their forces are all green and therefore slow to react and they are running out of cash. But they know the EDA is concerned not to raise the radiation level or to induce another ice age, so they hope to persuade the EDA not to attack.
The joker is they have a "Supreme Leader" who can be totally unpredictable and unreasonable. As long as no one survives that would suit the Supreme Leader as the Hidden Imam will then return to earth to save the world.
The current change of strategy is because the earth is running out of TN minerals, the Islamic Block has a commercial shipyard nearing completion. If it can persuade the EDA they can now project power effectively they can eventually set up a Luna mining colony. By allying themselves with Africa and the Middle East they hope to make the EDA think they are not worth the effort to "absorb". Will it work? May be yes, may be no.