If there’s a war, which side are you on?
A. Uncle Donald… I mean, Uncle Sam
B. Mother Russia
C. Embrace Papa Xi’s thought
D. Convert and join ISIS
E. Create a new faction, start with binging on toilet paper rolls
F. United Europe under German leadership
G. Pax Britannica
H. Prepare your swimming/diving gear to join Invasion of Foochow, Amoy and Canton.
I. Do a Gangnam style with Dear Leader
E. The anti-dumb thread faction.
EDIT: I feel bad I wrote that. Okay, I’ll say
E. Costco Toilet Paper Hoarding Gang
Aren’t A and B the same under Trump?
I say A under President Biden
Hopefully the winning side?
Pro tip: don’t join F.
Freedom.
No option for Taiwan retaking the mainland?
Youre forgetting china already belongs to taiwan under 1 china 2 systems. Spread the word.
Which side gives me the coolest guns?
What if France is allowed to co- rule?
Deus Vult
They would surrender again.
My side.
Uncle Sam gives you Ion Cannon
Mother Russia gives you Tesla Coil
Papa Xi gives you Dragon tank
GLA gives you Technicals
This practically European Union, right?
For sure F. Ze German guns are so cool, even in the far future they still use them. Star wars is full of them (ok also some Brit stuff), Aliens features them, …
Still, don’t join that. Italians got bitten with that option, too (or the other way round, historians please comment).
Most of those factions you listed are already under alien control, so you’re pretty much screwed.
Myself, I’m gonna head for the Neutral Planet. 
There’s an interesting conspiracy theory that faking a alien invasion is how world leaders will establish a new world order uniting the entire world.
But who’s going to fake it convincingly enough for the general public? Every time a ship gets caught on camera, you can’t even blink before a whole herd of expert skeptics declares it a bird, a plane, a weather balloon, a flying pig… literally anything but a spaceship. And people eat it up! That’s how we stay safe btw. 
H.G Wells
Your kind hasn’t figured out humans aren’t all that smart?