The US has become Eastern Roman Empire after Rome fell. Like the ERE we have the most advance military, but small in numbers and a weak Treasury. ERE pursue a military strategy that emphasizes dirty tricks, good intel (spy on everyone) and causing chaos amongst your enemies. Your objective is never completely destroy your enemies but keep them around and constantly fighting. Our ME policy is to keep the jihadist and Iran off balance and fighting. No US forces are needed to do this except small Spec Ops and occasional intervention of very short duration. Due to the rise of America First sentiment in US, financial debt and unwillingness to draft people for a large low cost military the US will pursue a ERE strategy to the end even after Obama leaves office and a conservative GOP takes his place. Finances determine our ability to intervene otherwise we go the way of the Western Roman Empire (WRE) bankruptcy and collapse.
Even with a conservative GOP president it will not get better if the conservative mantra of government cost cutting is followed. I recently read historical novels about Attila the Hun. He initially attacked Constantinople. There was a great earthquake which damaged the towering city walls. The citizens were inspired to help repair the walls and then fought with their picks, shovels, etc. This fight and disease in camp drove the Huns away. They then headed west.
The general who saved Constantinople headed west too. The weak, silly Roman emperor did not want to finance defense, so the general went to the Visigoth king in the area of France. He told them that their Vandal enemies (then in North Africa) had fought with the Huns at Constantinople. At first he was not believed, but when the Vandal ruler murdered the Visigoth king’s daughter who was supposed to be his bride, he fought the Huns to a standstill and they headed home. A few years later the Vandals sacked Rome, and that was the end of the Western Roman Empire. The unwillingness/inability of the weak Roman emperor to finance the military brought doom.