that the engagement is good but there's much more to be done, human rights, et cetera. he hoped that congress and said congress eventually would lift the embargo. castro says congress has to lift the embargo if there's to be a formalization. that's standard rhetoric. the fact is it's moving forward. >> i don't know how castro plans to get things through congress when no one in the united states seems to be able to do the same. what are the limits of the progress, jim, in this relationship if congress doesn't move forward? they're not about to vote to lift the embargo. >> the president made clear that's a key stumbling block going forward. the president holds out cuba and iran as his endorsement, his defense of diplomacy as a way forward. that's what we heard from his speech as a model for other conflicts. the trouble is, there are fundamental differences between those and russia and ukraine and syria. can those be a model going forward? considering the differences between the u.s. and russia, on an issue like syria, it's hard to see how you make that progress. >> we'll be watching. great to get your input.