1) The purpose of a sanction is to prevent people from breaking the law and to take control.
2) A separatist is a group of people who have their own opinions or views. These groups are related to the invasion of Ukraine for example women who aren’t in the army are fighting for Ukraine (they call themselves the women of Ukraine).
4) By Ukraine joining NATO they have a backing and Russia would be impacted because it would be harder to invade Ukraine.
4) In Poland for example people are helping families by taking them over the border and giving them free essentials with no cost, aswell as giving them shelter, toiletries, food, clothes and all necessary things for absolutely FREE. Well done Poland, I am very proud and Ukraine is very grateful :D