These latter interventions have arisen as a result of a perception of the Security Council's failure to act or ineffective action where there has been concern about the severe deprivation of human rights.
For example the failure of the UN to broker political peace in Somalia led to the US Operation Restore Hope in 1992, which for the first time in American history, saw American troops committed to a military operation for a cause completely unrelated to protecting their national interest. The operation's goal was to open supply routes for food relief efforts and prepare the way for a UN peacekeeping force to preserve the security of these routes.
This in itself is contentious as it would appear that under the charter there is no right of either legal defense or collective humanitarian intervention without Security Council authorization under existing international law.
The international community is between a rock and a hard place as they seek to sustain so ...