Kevin Drum raises a number of concerns with Hillary Clinton's foreign policy positions, and i agree with him, but he ends with, "This is one of the reasons that Democrats need more primary choices in 2016."

More? Do we have any? I mean, i know we have this guy but i don't really see that going anywhere.

I've seen a number of people talking about Elizabeth Warren as a serious challenger.

She's said she won't run, though:

http://talkingpointsmemo.com/livewire/elizabeth-warren-promises-to-serve-out-her-term-not-run-for-prez

I mean, i wouldn't hold her to it if she decided to change her mind, but she's been pretty definitive about it.