So this is how it goes:
I am Dutch. So I am playing this game and at some point a guy A asks me in Dutch "if you go up I go down" (that's how it starts). I say "I dunno ask me in English". He doesn't reply and goes down. I have only 1 land (with a big stack) and my best option is to pot. A couple of turns later player B (the owner of "up") says in Dutch "Hey, more Dutch people here". And the 3 of us have a good laugh about how screwed I would have been by player B if I had replied that it was a deal about going up. However, at this point my land with the stack is sitting exactly at the place player B needs to connect his big territories. He would be the most powerful player having that territory. It can be a good idea to make a friend so I move to a medium pile of one of B's opponent, givig B connection and taking out an opponent's pile. To avoid rumours about secret national alliances I say (in English): "There you go player B, I hope you respect that". In the next turns B takes the countries around me and I am safe. I don't think anything has gone wrong yet: I am just helping someone to become powerful and be his friend. This has nothing to do with us being both Dutch. I do this with any player when it helps me.
So player B is strongest of the board, I am surrounded by B. A (being quite strong) says in Dutch: "I'll go for blue and you for Cyan". This seemed to me the second remark by player A that's unmoral and I try to save the day by saying "In English please". But blue replies: "Never mind, we figure what's going on here".
So the rest of the game player A and B wipe out the board and the 3 of us become 1st-3rd. I feel bad about this but I try to avoid national alliances: one time a guy who asked me was wiped out by me first, because it was the best option in that game. This time I got sucked into it, but I don't know where I could've done it differently.
So Dutch and Belgians, please don't ask me for your alliances and about going up or whatever. I just do what's best for me and _sometimes_ that includes making friends. And if you do ask, do it in English.
For the rest of the players: sorry.