I'm not going to present myself as a foreign policy expert, but if you just want my opinion on the Russian reset, I can be brief (I don't want to put up two walls of text in a row).
There was never any chance for long-term success of the Russian reset under the Obama administration. Vladimir Putin is, for all intents and purposes, the Russian nation, and he is very enamored of the idea of returning to Cold War days where the U.S.S.R. and the U.S.A. were all that mattered on the world stage. Russia's subsequent annexation of Crimea was almost inevitable. I don't know if there was anything anyone could have done - remember, after the Georgian invasion, Bush immediately took action and put up a show of force in Georgia, and Russia responded by just doing its own troop exercises. Putin wants people to fear Russia.
I guess I'll say that it did accomplish putting some multilateral sanctions on Iran at a critical time (which probably led directly to them being open to nuclear negotiations later on under Kerry) and that Clinton reportedly warned Obama from the start that it was naive - or at least optimistic - to think the reset would work, but she did what she could when the President directed her to. Plus, once the Syrian civil war erupted, there was just no way we were going to see eye-to-eye with Russia. The reset was never going to work, but I don't think Clinton is to blame for that, I think President Obama just didn't perceive what kind of a person Putin is, and Putin is the bottom line.
As for intervention in Libya, hoo boy. First, there was enormous international pressure to do something, so I can't fault us getting involved in the first place. However, we definitely, without a doubt, should have done more once we decided we were going to be there. Getting involved in Libya without a plan for what to do after Qaddafi was gone was a huge blunder. Maybe that wasn't our decision to make, but preventing the country from falling into chaos when it's only leader for 40 years is gone is one of those things you have to think about before involving yourself in the first place. I can kind of see Obama's situation here - the last thing he would want to do is commit ground forces or occupying forces (which was also against some other resolution, I believe, in addition to being an unpopular political move) so it was a rock and a hard place scenario. I do think Hillary wanted to push for more, but Qaddafi was also a truly wretched individual and I have trouble faulting her for wanting to seize an opportunity to get rid of him. If the lack of proper follow-up and commitment to the region was her doing, I'll fault her for that, but it seems like it was the President who was too hesitant to do more.
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