Remember when the USA didn't lose all those young men in Vietnam who might have agitated for social revolution among their own generation alongside them at home? But at the peak of its power and in peace time some people think it was the right time for America to "Iron out some kinks" of how things worked. It like, invaded itself into a Pyhrric War... again
Not sayin' a second civil war, but only because the resulting state of Egalitarian States of America would revise books to say the first American Civil War was the War of Slave Independence, so the USA's second Civil War embroils Mexico, Canada and some Caribbean nations as well, but only the Canadians and Americans form a Union while Mexico "Balkanizes" (right word in this situation?). Civil Strife then dies down as the violence quickly wears out, American people used to a high standard of living quickly re-establish it as norm with pockets of violence and democratic reform on the way. Nationalism goes down the drain as the USSR decides to play it by ear and slowly expands its influence over the world, coming to the conclusion that the Chinese are instead going to influence the globe more than they can prepare to do. Panicking at the negotiations table the two make nice for the public but the gears are grinding in two different directions. It's the smallest details holding up some negotiations as well, but soon enough there is a common "No Market" sphere of influence between the two, and what they have they struggle with the other to keep to themselves. Not exactly any communist invasions of the USA were planned to take advantage of the Civil Strife issue, since the populous would be unsurprised and ready to shoot back.
Russia doesn't want the USAs nukes going to Canada (losing to the land war to the not-states), but Canada was the port of choice for some of the loyal US navy in exile and in legal limbo in Canada. Soon enough China sees that it won't be able to have any chance of actually carving the USA into its own sphere of influence claims to be satisfied by having the Philippines, but only in their dreams as remnants of the US forces in Japan send a strike force to prevent it (Also they shouted MacArthur a lot, some ideas about his words plus re-using older anti-Asian WW2 Propaganda) and then China got the message. Alaska was not backing off on intercepting things coming to its airspace, Officially on the Fence, but trading pure gold for fuel (Save retreating Canadas 'commitment' to NORAD, which wasn't near enough).
Europe is trying to get Canada (who is still losing) to approve what they feel is a vital right of way support for intervention since it's being torn by the strife in itself too much to allow this; the line is too fluid and there are American Moles in the last of the Canadian Forces. It won't while Mexico doesn't want Spanish Fascists going into the USA and refuses the rest of the Europeans as well. Newfoundland is "taken back" by Britain but Labrador is not taken, the mainland being excluded from the Military Occupation, but Canada wouldn't have begrudged the British from taking Labrador too. Mexico falls before the Europeans can convince it either.
Europe was simply banging their head on asking Canada as it fell into the new state of the ESA, a compromised truce between constituent nations that was more shaky than building a Berlin Wall vertically. It's in no mood to waste men on interventions globally as it has to rebuild but will fight if provoked. Biggest nation in the world, Manifest Destiny...
...
But just as peace settles, a shot that rings out across the world sparks in South Africa. Nelson Mandela is shot, the South African government scared of him and his increased morale from seeing the USAs civil rights movement move forward so violently. He had not even done anything to make his mark, the operation was still planning while a mole identified people.
Though he is not the person we know today, or back then, but slightly different that incites violence faster; South Africa falls to communist-backed Guerrillas with only token remarks about the equality.
In the Australian continent some riots are had but the continent prepares for what it thinks will be a sunny future (they're always right). Trade suffers but the standard of living lowers slightly (while rising when cutting out certain historically privileged demographics, a sign of socialism?).
One of the main winners of the USA's Second Civil War (or the "War for Pan-American Rights" as the E.S.A. calls it) was Brazil; as the new inheritor of the Central American states as its own puppets, a few more fingers in the Caribbean. But only after it played its hand right (no one likes getting a hand shoved up their butt unexpectedly, finger, hand or national puppet). This is all before 1975.
Did I forget to mention anything?
Oh, right, by 1984 the world is divided into 3 Mega Nations of the Egalitarian Transoceanic Democratic Union (Oceania of 1984, plus India), the Euromed Union (which is pretty much Euraiba made of Convenience for Europe with no USA, not Muslim-dominated but extending to Turkey, Israel, Egypt and Morroco, etc), and the Asian Workers Union (Rump Eurasia/East Asia).
James Bond then has to save the day from nuclear annihilation...by becoming a quintuple-agent in the biggest 3 Intelligence agencies the world has ever seen and stopping a mad man from triggering a doomsday device of unimaginable horror...
