Finland–Russia relations have been conducted over many centuries, from between Sweden and Russia in the early 18th century, to the planned and realized creation and annexation of the Grand Duchy of Finland within the Russian Empire during Napoleonic times in the early 19th century, to the dissolution of the personal union between Russia and Finland after the abdication of Russia's last czar in 1917, and subsequent birth of modern Finland, with support of the bolshevik (Soviet) Russian government. Finland had its own civil war with minor involvement by Soviet Russia, was later invaded by the USSR, and had its internal politics influenced by it. Relations since then have been both warm and cool, fluctuating with time. Russia has an embassy in Helsinki, a consulate-general in Turku and consulates in Lappeenranta and Mariehamn.