I (AH) was allied with a bunch of nations. France declared war on Spain, then I think Germany declared war on France, causing me to be at war with France, but then one of my other allies declared war on Germany causing me to be at war with Germany and allied to France? Then next turn I was at war with Spain, Britain, and Germany. Then one turn later I was at war with everyone, and various other nations formed alliances and declared war on each other on the same turn.
I wasn't really ready to be at war given that a few turns ago, I was allied to 5 nations and not planning on fighting anyone by myself, much less than fighting literally everyone.