The international community has shown to be Pro-Israeli and thus anti-Palestinian. The Palestinian Plan for Partition was a plan to peacefully split up British Palestine into a separate Jewish and Arab state, as well as Jerusalem becoming a free city. The plan gave 62% of the land to the Jewish community despite the Arabic population having twice the population. Obviously the Arab population rejected this plan on the basis that it violated the right to natuonal self-determination, and thus this perpetual conflict was born.
Especially with the US being so obviously Pro-Israel and having virtually all power on the decision-making of the West, why would you think the Arab population would ever get fair treatment under an international "peacekeeping" mission?