I have a 95% report on Osa123 & Romekromek being secret allies (as in I'm certain they were secret allies, but I would like a touch more proof before such condemnation).
Ok, it did start prior to this, in the first game I played (no screen shot), another guy accused them of being secret allies. Honestly, that game was over after the first turn, so you couldn't tell. Anyway I told the guy to reported it (with evidence) if he believed it, but he clearly hasn't.
Anyway, in the next 2 games.

Game one, I was attacked by both when I was strongest (which was completely fair), but at this stage I'd been weakened, and blue had just continued another attack against me after green became dominant. From here, I was attacked by green, and blue attacked yellow, not touching green until we were both dead.

In the second game, (I was spectator) blue & yellow had to jump over several '1' countries to establish borders, but from then on attacked green and red, ignoring each other, except to hop over a couple of '1' territories to get at the other players. At the end, blue made a show of attacking several yellow, and paused to let yellow kill red before ending the game.
Couldn't watch any more because both players left.