Eurovision is supposed to be a place where politics are left at the door and everyone celebrates the good, the bad and the downright awful cheesiness of the best and worst music that Europe (and now, beyond) has to offer.

Unfortunately, that's not the case this year as political tensions between host nation Ukraine and Russia have flared up.

Russia decided to enter this year's competition only in recent days, but there is controversy surrounding Yulia Samoilova's participation as she performed in the Crimea, the area of the Ukraine annexed by Russia, in 2015. It is illegal under Ukrainian law to enter the Crimea without permission as it is seen as illegally-held territory.

Ukraine's foreign minister Pavel Klimkin said that his country's secret service was looking into it, but Samoilova's entry was viewed as a 'provocation' and they are threatening to bar the Russia entry from the competition altogether.

Last year, Eurovision was won by Jamala, whose song '1944' referenced past history and tensions between the two countrys.

The Eurovision final takes place - with or without Russia - on Saturday, May 13th.