Obama has managed to destroy the bonds between the US and many former allies. The results of this Presidency are that all that he claimed to desire in 2008 have all backfired on him, the nation and the world.
Anybody with half a brain could see this coming in 2008...
Some, such as with the UK, were clearly purposeful. Some seem to have been lost for neglect and negligence, while he has teamed with his real allies in the world instead.
The US has several natural allies. Start with the anglosphere. Canada, Australia, the UK, and even New Zealand share a common language, a set of values, basic common law, and much more with the US. You have to go back 50 years and more to find worse relations between the US and these natural allies.