It looks like things are intensifying.
The U.S. has released evidence that they say shows Russia has been firing artillery from Russian soil at Ukrainian targets. This is significant because if this is true, it can no longer be pretended that this isn't an international conflict.
http://www.washingtonpost.com/world/...265_story.html
The U.S. also said that they will provide intelligence to the Ukrainian military to help destroy rebel missile sites, which will bring the Americans closer to the conflict:
http://www.nytimes.com/2014/07/27/wo...bels.html?_r=0