Apparently pacifism was a wiser path. Sweden now enjoys one of the highest standards of living in the world. The weather is actually pretty mild year-round due to the persistent warmth of the Gulf Stream. So there really isn't a bad time to visit Sweden. But between May and late July is truly special.
Summer means festivals.
Its no wonder, then, that the sunny season means summer festivals. Cities and towns across the country overflow with children wearing flowers in their hair and paint on their faces. Everyone comes out to help decorate and raise the Maypole. Stockholm and G teborg feature special entertainment events almost every day of each week in the summer, free to anyone who wants to attend. The parties, of course, aren't relegated completely to the summers.