You were not present when the ICDN held their vote, so you are the one who is alone here.
Also, I advise whoever becomes sanctioned and is a member of the ICDN to think about changing your policies. Just condemning a nation or alliance because they didn’t consult you about their own foreign affairs that commenced prior to them joining the ICDN doesn’t mean that you can just expel them. Change the policy and we’ll remove the sanctions.