Two distinct approaches to conflict management can be observed in today's modern conflicts, marking a drastic departure from the principles the international community sought to establish in the aftermath of World War II.
The first is a shift away from global consensus, toward narrow national interests. Although this approach has made a comeback in recent years, it is not entirely new. Its first manifestations can be traced back to the early 1950s and the outbreak of the Korean War.
Taking advantage of the Soviet Union's absence from the United Nations Security Council (it had boycotted the grouping for refusing to recognise Communist China), the UNSC passed a resolution establishing a UN force to fight alongside South Korean and US troops against North Korean forces and the Chinese units supporting them.
The move—viewed at the time as an effort to isolate a major power such as the Soviet Union—was the first notable departure from the spirit of consensus that had prevailed globally following the defeat of Nazi Germany and expansionist Japan, and the strategic interests of the great powers. The move upset Moscow, which, in turn, refused to condemn its ally, North Korea.
Profiteering approach
Jumping to the 21st century, this shift toward narrow self-interest can be seen in today's raging conflicts. Take Ukraine, for example. Under the administration of former US President Joe Biden, the US and Europe were in lockstep over supporting Kyiv in the face of Moscow's aggression.