S: "Why does the PA still calls itself PLO?" Because they are two different organizations, even if Abbas is the titular head of both. The PLO is an umbrella organization for many separate Palestinian political parties (Fatah being, of course, much the biggest) and it is also the recognized representative of the Palestinian people. The PA is much less than that, being merely an interim authority that grew out of the Oslo Accords between Israel and the PLO i.e. it is a placeholder where Palestinian politicians can practice the art of government while the infrastructure for a future Palestinian state is being built up around them. Think of it this way: 1) The PA only represents the interests of Palestinians in the West Bank and (though not currently) Gaza. 2) The PLO represents the interests of all Palestinians everywhere, *including* those who are in refugee camps in Lebanon, or Syria, etc. Those are two different (even if overlapping) things.