Will two new Democratic candidates join the 2016 race?

As rumors swirl about more Democrats jumping into the 2016 campaign, Karen Tumulty and John Harwood discuss a potentially growing field. Harwood says that once a person has the desire to be president, it's hard to shake it. But while Biden is preserving his options, it's unlikely he'll actually jump into the race. Plus, is there political solution for Syria on the horizon?