Well, we already have a tag called "Stalin", and Stalin used to be quite the babe when he was young, so it was only a question of time until we would get to this. (We have a "Lenin" tag, too, but Lenin wasn't that attractive - he lost his hair very early and was generally rather asexual - as opposed to the womanizer Stalin, who kept the thick hair on his head until his death.)
Stalin in 1902, at age 24:
These are mug shots by the police in Batumi, where he was arrested for organising several large workers’ demonstrations.
(The first photo, according to Wikimedia commons, is from the book "Josef Wissarionowitsch Stalin - Kurze Lebensbeschreibung", Publishing for Russian literature in foreign languages, Moscow 1947", and the second was featured in E. Radziński's "Stalin. Pierwsza pełna biografia oparta na rewelacyjnych dokumentach z tajnych archiwów rosyjskich", Warszawa 1996.)
In 1919, at age 41, with comrades Lenin and Kalinin at the VIII Congress of the Communist Party of the Soviet Union, Stalin was still kind of good-looking. Or maybe this photo was retouched.
Unfortunately, Stalin suffered many abuses during his childhood and youth, was apparently just generally a bit of an a*****e, and ended up a grown-up with severe psychological problems, which turned out to be lethal for an immense number of people when he gained more and more power in the Soviet Union. (His story is quite typical for many politicians, though maybe a bit extreme.)
Those who in spite of everything would like to feel a bit of sympathy towards him might be interested in Vladimir Sorokin's novel "Blue Lard", where Stalin gets to show a soft spot in his mad love affair with a rather dominant Khruschev.