UN, Dutch Sued

Survivors of the Srebrenica massacre just sued the UN and Dutch governments over allegations that neither attempted to prevent Srebrenica massacre despite it being a UN protected zone and the Dutch military serving to protect it. In fact the allegations go further and allege and that the 250 Dutch soldiers, faced with a division of over 5000 Serbian troops, helped seperate men from women and children, and loaded the men onto busses where they were summarily shot by Serbian forces. Is their a legal and moral obligation of the UN and the UN member nations to actually do what they claim they are going to do, especially in military protection? Or maybe we realize that the UN cannot do everything its charged with doing in its current structure and that reforms are desperately needed to prevent further tradegies like this one.