The reader may remember the Serbian efforts to cleanse the Balkans of various ethnic groups.
NATO forces stopped the butchery and the European Courts tried the few war criminals that fell into their hands.
The west lost interest and failed to push necessary reforms.
The people of Kosovo continued to dwell in Yugoslavia with the Serbs who had left them dead in heaps.
The so-called democratic NATO countries backed the independence movement, while the repressive Russian and Chinese regimes sided with the Serbs.
World War I started with less turbulence than this, only the hateful lunatics did not possess nuclear weapons.