I know that more than a few of my readers have a penchant for strategic thinking. To these I suggest a website just added to the Stage's blog roll, Grand Strategy: The View From Oregon.
"Geopolicraticus", the author of this blog, writes with the "intention to view geopolitics through the prism of ideas." To this end he is remarkably successful, and his blog is a whirlwind journey through history, strategic thought, and philosophy. If you do not mind large doses of theory intermixed with analysis, I recommend giving Grand Strategy a read.
Below I have linked to a few of the posts from Grand Strategy that I have found to be particularly thought provoking.