They´re always embroiled in child molestation scandals where they´re supposed to be keeping the peace. Sounds like a very good scheme to actually disrupt the peace if you ask me.
In most of the cases, the "United Nations Peacekeeping Force" is composed of soldiers from third world nations such as Bangladesh and Pakistan, where there is a history of human rights abuses by the soldiers against the civilian population. Pakistani soldiers have committed numerous human rights violations against the Balochis, while their Bangladeshi cousins have participated in the ethnic cleansing of Buddhists in the Chittagong Hill Tracts region. This could be avoided if developed countries such as Japan and Luxembourg are ready to provide soldiers to the Peacekeeping Force.
Could also be avoided by shit-canning the entire United Nations. I'm not opposed to having an international organization to deal with a limited number of critical international situations, but the United Nations was, IMHO, born corrupt and screwed up and has only gotten worse since that time. Technology is such that the entire world could vote individually for positions within an organization with a sub-set of it's current charter. Just as is the case here in the U.S., a lot of problems in the U.N. could be addressed if the charter outlined a radical form of transparency. This is the polar opposite of what we have going on now, and the covert nature of it's leadership and operations are responsible in my opinion for a great deal of the deficiency and malfeasance expressed by the organization.