Procrastination?
More like inability.
Without US involvement, anything but the most basic military involvement is simply not possible. The US, of the Obama or Romney flavour, is highly unlikely to get involved in any "nation building" or "regime change" ever again. To understand the reasons why you only need to read some of the hysterical posts on this thread.
Put simply, if you wish to make to make an omelette, you have to break eggs. The prevailing voices all wish to eat the omelette, but scream at the prospect of eggs being broken. They scream at the chefs for breaking civilian eggs, when you cannot differentiate between military and civilian eggs. Scream at the cost of the eggs. Scream that the chef has been motivated by payments from JP Morgan, Oil Companies, revenge the threat to the chef's father and other such unsubstantiated nonsense. Can you be surprised when the chef says, "make your own fecking omelette"?
Perhaps, Russia and China will demonstrate how to effect "regime change" without the death of civilians. I look forward to that.