Remember the Kurds?

The largest chemical attack in history on a civilian population was not in Syria, but in Iraq, where Saddam Hussein slaughtered thousands of ethnic Kurds for not being supportive of the regime. Thousands more died later of complications, disease, and birth defects.

Barack Obama was a consistent opponent of the war in Iraq, but now he wants war with Syria. What's the difference, exactly? Is it because Bush was president, so he reflexively had to oppose everything he did? Or is it because Democrats, peaceniks when out of power, are disturbingly comfortable with projecting military power when they're in charge? The operating principle just seems to be that we have no national interest, and therefore we must be acting out of the goodness of our hearts.