AUSTIN BAY writes on fiddling and twiddling with Iran. The loss of momentum in the war reminds me of something that I believe Napoleon (or maybe it was Talleyrand) said: “You can do anything with bayonets except sit on them.” Much of the problem in Iraq comes from Iran, and we seem curiously unwilling to do much about it. I wonder — does Iran already have nuclear weapons, and are we being successfully blackmailed?