The Jovian

My personal head cannon is that Carville died when the Soviets took control of Washington and captured the Pentagon and, Vladimir is actually the Soviet Player character while Eva and Zofia are still the battlefield advisers, (the ones that speak to you in the text briefings and and debriefings in each mission).

The way I see it Rashidi's alliance with Yuri was always one of convenience. He believed that PsiCorps was the best hope for Africa to be free to chart its own destiny. However as Yuri's methods became more and more underhanded and he went from subverting the Allies and Soviets to conquering and mind controlling them, not to mention seeing how psychotic Libra is and how utterly unstoppable the Paradox Engine is he decided that Yuri was the wrong horse to back and chose to make an alliance with the only other player in the game whose interests were even remotely compatible with his, Yunru's Proto-Foehn army.

Think about it, from Rashidi's point of view Yunru is just a child forced into a life she doesn't want and she's attempting to create a liberation army of her own, to free her own people from Soviet oppression much like how he's trying to free his from the Allies' control. Yuri clearly doesn't actually care about Rashidi's interests, to Yuri, he's just another tool to be used and discarded whenever he's no longer useful. Yunru however does seem to share the same goal as Rashidi, destroy the corrupt superpowers that are currently controlling the globe and build something better in the aftermath, he understands what Yunru is fighting for but as he said at the start of "Obsidian Sands" he has no idea what Yuri is fighting for and he doesn't like the possibility of Epsilon becoming a case of "meet the new boss, same as the old boss". I'm sure his decision to defect to Yunru's nascent Foehn Revolt wasn't a spur of the moment action, it was the culmination of him getting more and more disillusioned with Yuri's Epsilon.

Here's my (most likely inaccurate) predictions for the final 6 missions of Act 2:

S23 - Fatal Impact: The Soviet forces attempt to return to Earth using the Epsilon shuttles they recovered on the moon and attack Yuri directly in Moscow, however Yuri triggers the shuttles' self-destruct, causing most of them to explode on re-entry save, the one the General was on. The General must then go on the run and escape the Epsilon forces that swarm his shuttle's landing site, before rendezvousing with what's left of the main Soviet army to plan the attack on Moscow.

E23 - Reality Check: In the Epsilon HQ, Yuri informs the Proselyte that he's found a way to shield his forces from the Paradox Enigne's time freeze, the bad news is that the Allies are aware of it and have sent an advance force to destroy the Temporal-Psi arrays that are keeping the Epislon forces from being frozen in time. Yuri knows that this will be a stopgap measure but the goal is to drain enough of the Engine's energy by forcing it to keep chronoshifting more and more forces instead of engaging a single time freeze with which to wipe out the Epsilon forces, so that when the Allies launch their final assault the Engine won't have the power necessary to be of much use and will be easier to destroy. Basically it's a "hold the line until the timer expires" mission.

A23 - Withershins: A remake of the final Allied Mission in 2.0 "Scarlet Twilight", except with the Paradox Engine this time. Siegfried notes that the Engine is running low on power and as such the Commander can only activate the Time Freeze one last time. But first the Commander must destroy the Temporal-Psi towers that are keeping the Epsilon forces immune to the Time Freeze. Once the player does so, they are given the go-ahead to engage the time freeze and destroy the Mental Omega Device. However in a dramatic twist on what was up until this point a running gag, Siegfried has miscalculated, the time freeze collapses and the machinery that generates it burns out, before the player's forces can reach the Mental Omega Device and the Paradox Engine finds itself right in the middle of Epsilon's forces. Given a choice between either destruction or escape via Chronoshift, Siegfried engages the Paradox Engine's Chronosphere, channeling all of the Engine's remaining power into it to make one final Chronishift, saving the Commander and the Engine, which promptly begins to fall from the sky over the Bearing Strait.

S24 - Death's Hand: The General leads the attack on Moscow, in a remake of "Red Revolution" from RA2, firstly by sending in Krukov, Reznov, Volkov and Chtzkoi to sneak into the Kremlin grounds and destroy the Psychic Beacon keeping Moscow and it's contingent of Russian troops mind controlled, afterwards, the player much track down Yuri who is attempting to flee to an Airport north of the Kremlin (in a role-reversal remake of "No Dilemma" from 2.0), and destroy all the Epsilon forces in Moscow. But as it turns out, it was a trap set by Yuri, who activates a second Psychic Beacon hidden in the very Kremlin, mind controlling the entire Russian force, who proceed to kill the heroes, and further deploying the titular "Death's Hand" super-MIDAS rocket, loaded with conventional explosives against his HQ in Antarctica.

E24 - Babel: With the Paradox Engine gone, the remaining Allied forces in the Antarctic, led by Norio and Tanya, decide to go for broke and destroy the Mental Omega Device, the Proselyte must hold off the initial attack wave and then launch a counter attack that will destroy their last base in the Antarctic, killing Norio and Tanya in the process. Yuri then contacts the Proselyte and instructs him to send Libra into the Mental Omega device. Once that is done the Death's Hand impacts and destroys the device, unleashing a psychic shockwave that, while harmless to psychics, saps the willpower of any normal human making them even easier to mind control, he then reveals to the Proselyte his true plan, to use the Psychic Amplifiers he has already constructed to mind control most of the planet by increasing their range to maximum, relying on mankind's compromised willpower from the shockwave to keep them under his control despite the Amplifiers' lowered power output in order to maintain their range of effect. He points out that there is one final loose end, and that is the downed Paradox Engine.

A24 - Hamartia: The remaining Allied forces flee the semi-floating but damaged beyond repair Paradox Engine to the nearby shores of Alaska. They've already received reports that Yuri's plan has succeed and most of the world is under his control now. He's won. And he has sent forces their way to mop up their remaining forces and ensure that the Paradox Engine is destroyed. The mission revolves around navigating through the Alaskan coastal wilderness and finding a safe place for Siegfried and Yourself (the Commander as an in-game mission unit) to plan their next moves. They are then contacted by Yunru's proto-Foehn force, and provide the surviving Allied forces with rendezvous co-ordinates. Once the co-ordinates are reached, the Commander and Siegfried meet up with Yunru, who explains exactly what's happened to the world and now that the Allies and Soviets are gone, they must work together to create a Revolt that will topple Yuri's dominion.

My take on the Foehn origin missions is as follows:

1) Nobody Home: The Proto-Foehn forces (consisting of what Foehn units we saw in "Noise Severe") led by Yunru attack an Epsilon base in Kashmir while the bulk of their defense forces are busy fighting elsewhere during the events of "Noise Severe". After the mission is complete Siegfried and his Chrono Legion chronoshift in. Siegfried has recognized that the Allies and the Soviets will lose to Epsilon unless they unite but has failed to convince the Allied leaders to seek a temporary alliance with the Soviets and as such has taken matters in his own hands, using his Chrono Legion to convince isolated, leaderless pockets of Allied and Soviet forces (including some Kanegawa Industries scientists still trapped in Japan, explaining how the Jackal Racer got into Foehn hands) to converge on a hidden base in Point Hope, Alaska which will serve as a staging ground for a "revolt should Yuri's epsilon army prevail over the free world." Yunru accepts his proposal and her small army is chronoshifted away (explaining Foehn's access to the units and the nano-technology that created them).

2) Kill the Messenger: One soldier in Bastion base deserts and attempts to make either the Allies and Soviets aware of the Bastion base's location. Not wanting the location of the base to be compromised, the player is tasked with finding and neutralizing him before he can rendezvous with his side's forces as they patrol the area.

During the mission the player is given brief snippets as to what is happening during the events of the final missions of Act 2 maybe in the form of scattered communications that Foehn's advanced cyberkernels can just barely detect. 

The "Conscious Slumber" may refer to how most of the free world is no longer in control of their free will, and is now under control Yuri's control. With a vast majority living their lives not thinking for themselves but for Yuri, the event might be hinting that the Mental Omega Device, rather than using brute-force mind control, inhibits free thinking of the many affected and links them to a semi-hivemind, living out their fantasies and desires as the rest of the world withers in the psionic storms that ensue (a probable side effect of the Mental Omega Device).

As somebody else already pointed out "Babel" the final Epsilon mission's name does not refer to the Babylon tower but the event when God forced everyone to speak a different language and broke man's unity. Maybe the Mental Omega Device gets damaged in the fight (or maybe it was never going to work as intended due to a design flaw) and malfunctions, instead of creating a global human hive mind led by Yuri as a hive queen, the Device instead creates the Conscious Slumber as described by Sven and psionic storms that wipe out most of Epsilon's leadership including Yuri and the Player's Proselyte.

As the player discovers this mess, we finally arrive at:

3) The Remnant: The player is given the task of linking up with the damaged Paradox Engine and survivors from a Soviet naval fleet in the aftermath of Act 2. One of my longstanding theories about the final missions of Act 2 has been that the Paradox Engine will malfunction at the worst possible time and deny the Allies victory as their "Hamartia", their fatal flaw that leads to their downfall, is their over-reliance on the Engine and its temporal manipulation abilities.

As a result the survivors are brought into the fold, temporal manipulation technology is deemed too unreliable for Foehn to continue to use but the Engine's prototype wind manipulation tech that enables it to fly (my explanation for the vortex underneath its in-game model) is still viable to develop and improve upon (hence the Tempest Architect, the Windblades, the Windtraps and the Zorbtrotters). The Engine is repaired and re-christened "Coronia" (I agree with Sven that this is the likeliest origin for the thing) and the Foehn Revolt is finally created to find a way to destroy the Mental Omega Device and succeed where Foehn's predecessors could not and defeat the remaining Epsilon forces that now control most of the planet, leading to the Foehn Campaign.

My thoughts on the whole Libra's World discussion is as follows:

Based on the names of the final missions of Act 2, my theory is that the Allies will try to attack Yuri's HQ in Antarctica in an attempt to destroy the Mental Omega device (Yuri's hinted ultimate weapon), only to fail miserably because of a mistake they've made (Hamartia means "a fatal flaw leading to the downfall of a tragic hero"), the Allies either over-rely on their chrono technology and it backfires on them or that they make a massive error in judgement that costs them the victory, presumably their inability to ally with the Soviets and launch a joint attack.

Yuri is then free to activate the device (after the Proselyte repels the Allied attack) as per the final Epsilon mission Babel, and a reference to the tower of Babel can only refer to the Mental Omega and at first we're led to believe that it's game over for the world, and then...

...The Soviets launch the Death's Hand missile (a super MIDAS bomb stolen back from Epsilon, which was made from the MIDAS warheads they stole in "The Conqueror") and it obliterates the device and Yuri and most of his Proselytes including the player character. The defense of the Death's Hand missile platform would probably comprise the final Soviet mission Death's Hand.

Epsilon still controls most of the globe in the aftermath (with the Allied and Soviet forces reduced to small pockets of resistance, some of which end up joining Foehn) and with most of their leaders gone, Libra takes charge and things really go downhill for Earth at that point. That is until the Foehn Revolt shows up to save the world from Libra's madness. Hence "Libra's world".