Liberman isn't alone in these feelings virtually every Israeli politician who accept the idea of 2 states on the left and right want a solution that involves the transfer of arabs in Israel. The bulk of the jewish population in general would also like to see some kind of population transfer and if there was a referendum held on it the population transfer camp would win with a huge majority. Probably the best solution is non essential areas with large arab populations trade with the palestinian state. They loose Israeli citizenship & gain palestinian citzenship but no politician should be talking about the idea at this stage othwerwise everybody will say now they will never accept that solution. Some kind of population transfer will probably take place as part of any future agreement.
47 killed in clashes between ISIS, Syrian rebels near Turkey border, monitor says (Reuters)
from the article: Netanyahu: Israel, Palestinians can reach Mideast peace in a year