Yesterday I read Ralph Raico's informative piece on the origins of World War I. Politicians made some bluffs that were called, and that was a contributing factor. I retained that but it didn't really hit home until just now when I read a news item about Obama's UN speech in which he zagged more to a hard line on Iran, after previously zigging to a softer line. In addition, yesterday the Iranians zigged to a harder line in response to some other previous zig-zag in the West.