Today In History
This was all during the Napoleonic Wars, which was a particularly complicated time in European history, and that’s saying something. In any event, until 1810, Sweden was allied with the British in the fight against Napoleon. But Sweden was defeated by Russia in the Finnish War, precipitating the signing of the Treaty of Paris of 1810 (bear in mind that Russia, too, was part of the anti-France coalitions until her defeat at the Battle of Friedland.
OK, in any event, Russia beat Sweden in the Finnish War and forced Sweden to join the Continental System, which was Napoleon’s blockade of Britain. That was a big problem for Sweden, at least on its face, because there were a bunch of British ships trading in Swedish ports.
In any event, Sweden actually let British ships stay in their harbors and the two countries never actually fought each other. Peace was concluded in 1812.