Well we can't do much about what the Romans did. Muslim empires conquered Palestine in the 7th century yes, but they didn't widely displace the population. And even in the case of the roman, there was a large diaspora within the roman empire at the time, but not really a whole lot of systematic population replacment.

The colonists movement called Zionism (that is historically closely interlinked with other colonialist movement and has been ever since) that started after WW1 and hit its peak after WW2 and in 1948 quite clearly and explicitly have the goal of whole sale population replacement of the whole region.

The dominate right wing parties plans as far as we can tell is to import as many 'Jewish' people as they can and hope to decrease the amount of people in the West Bank and Gaza. They have pretty clear and deliberate strategy of long term ethnic cleanings, converting land that they agree in theory was gone be Palestinian and settling Israeli citizens on.

If there were Muslim empires from Persia invading Palestine still today, we should fight against that as well but that is long gone. However Israeli colonialism is still fully active and pushing forward literally every day.

As many people have already noted, Israel has practically made a two state solution impossible. The West Bank has been so carved up and systematically been destroyed as a viable state territory that its really can no longer function as such.

The Annapolis Conference was not close to solving anything, it was just another attempt at pressuring Palestinians to politically give more concessions. Bush and his Neo-Con allies had absolute no interest what so ever in a real Palestinian state. In fact Bush did nothing to prevent massive expansion of settlements during his terms and his presidency ended any series possibility of a real 2 state solution.