1. Diplomacy: I get to take three cubes from bag. This is clear, but what about the others? Do they take cubes immeditely, or do they take them at start of their turn?
Each player with a mini adjacent to one of your minis will draw a cube immediately.
2. Declining Kingdoms: No idea at all.
Each player with a mini adjacent to one of your minis will take a grey cube into their bag.
3. Treachery: I remove 1 of my miniatures then all adjacent oponents remove 1 as well. My question is, do they have to remove those miniatures that are adjacent to me, or are they completely free to decide which one to remove?
They decide which free miniature to remove.