There is a serious inaccuracy at the beginning of the article https://www.warhistoryonline.com/instant-articles/helsinki-bombings-1944.html?full-theme=1
...claiming that Finland was invaded by the USSR during the Winter War. While they did invade some land areas in the eastern Finland, in fact Finland was never invaded by USSR and Helsinki remained together with London and Moscow the only European capital of a country having participated the War that WAS NOT invaded during the war.
”Finland, along with Poland, was entangled in WWII from the very beginning. In November 1939, the USSR invaded the Scandinavian country and, in 1940, despite significant resistance by the Finns, the Moscow Peace Treaty was signed.”