What part of our diplomacy would you say has not failed? A weakened USA, the goal of the Obama Administration, is the opening to those that covet more land and power.
It's amusing that Kerry lectures the Putin regime on the idea that the aggressive exploits are a relic of the 19th Century. The reason for this is that the USA's military dominance, the thing that Obama industriously strives to end, kept the world in order.
This whole gang of numb skulls is a blight on the world and history. The only thing greater than their hubris is their idiocy.