The war on drugs.
That war has blighted more lives and sucked up more blood and treasure than Afghanistan, Iraq, and the "war on terror" combined.
Don't get the impression that the think tank here at Falling Downs is in any way "pro-drug".
But when the war on drugs causes infinitely more damage than the drugs, maybe it's time for a re-evaluation.
That's what the leaders of Mexico, Colombia, and Guatemala said to the General Assembly this week.
Not that you would have found that out by reading the mainstream media.
Because every news service in the Western world is obsessed with Ahmadinejad's speech and Netanyahu's cartoon props and won't even acknowledge that there are other issues to talk about.
Which leaves Obama clear sailing to keep on keeping on with the most self-destructive war in American history.