There were a few fleeting comments about terrorism in which various candidates attempted to outdo each other in their pledges to bomb the Islamic State to smithereens and make the sand dunes glow. It was abundantly clear that they were unaware of the capabilities and limitations of military action and had no real idea what they are talking about.
It appears we will be engaged in the terrorist war for a long time, and drones are a useful weapon. But we cannot win wars from the air, and we need to keep in mind -- we need to seriously consider -- the consequences of using drones. Every bit of "collateral damage" we inflict creates deep-seated bitterness against us that will linger long after the fighting abates.
Perhaps those claiming that the U.S. may one day be energy-independent will be proven right. Perhaps as tight oil production begins to wind down, other alternatives will be found in sufficient quantities (and at an affordable price) to make up the difference, and the U.S. economy will continue growing. Perhaps.