What will be the political fallout from President Trump's cancellation of secret talks with the Taliban?

Well, short term, the implication seems to be likely more violence in Afghanistan. In the United States, President Trump looks like he was going to host terrorists at Camp David right before the 9/11 anniversary making everybody furious. So, the political fallout for him is not great.

The House Judiciary Committee is about to vote on formal rules for an impeachment inquiry. Is that wise for Democrats?

I'm not sure it makes a huge difference for Democrats. The base is clamoring for continued impeachment inquiry so it makes sense to appease the base this way. But there's still not broad political support for impeachment so I'm not really sure where it goes.

What should we expect from the Democratic debate on Thursday?

It'll be really interesting. It's the first time all of the leading Democratic candidates will be on stage at the same time. So, Joe Biden will probably be under attack from all sides. I'm really interested to see if Elizabeth Warren and Bernie Sanders finally decide to go after each other. At some point, they'll have to.