In a diplomatic breakthrough, two figure skaters – Ryom Tae-ok and Kim Ju-sik – are expected to be part of the Democratic Republic of Korea (DPRK) delegation to next month’s Winter Olympics in Pyeongchang, S. Korea. The announcement made Tuesday is part of a long history of political moments on the Olympic stage.

Though the biennial event is meant to transcend politics, the Olympics can be an opportunity seized by countries, athletes and protestors to make political statements – often times, through the simple act of deciding who’s included and excluded from the Games.

Take the quiz below to test your knowledge of the protests, bans and symbolic gestures that have made powerful political statements on the international Olympic stage.