Sen. Rand Paul of Kentucky, a presidential hopeful and leading non-interventionist voice in the Republican Party, believes the United States should seek "respectful" relations with Russia and avoid antagonizing President Vladimir Putin over the ongoing political turmoil in Ukraine, where a Kremlin-backed government collapsed last week. "Some on our side are so stuck in the Cold War era that they want to tweak Russia all the time and I don't think that is a good idea," Paul said on Tuesday, in an interview with The Washington Post. Paul's comments underscore the latest foreign-policy fissure in the GOP, where the party's...