The international community hardly ever acts based on humanitarian reasons. It's either to secure a strategic place or foster economical interests of oligarchies. And only if no one will fight for that place. Afghanistan, Libya, Iraq ? That's ok, strategically/economically important and neither Russia nor China would step into the fight. Syria, Ukraine, North Korean ? As long as Russia and China are willing to defend them they're out of reach for Western intervention.
The international community hardly ever acts based on humanitarian reasons. It's either to secure a strategic place or foster economical interests of oligarchies. And only if no one will fight for that place. Afghanistan, Libya, Iraq ? That's ok, strategically/economically important and neither Russia nor China would step into the fight. Syria, Ukraine, North Korean ? As long as Russia and China are willing to defend them they're out of reach for Western intervention.