It would set an immediate limit on Jewish settlement, give further fucntional experience in a Palastinain state, and if successful, convince enough Israelis to abandon the hard right - which is what will be required for a government to agree to share Jerusalem. The problem for Abbas is that dithering has a lower political cost than doing something. Anything he does will be the subject of intense criticisim. What a surprise it would be if Netenyahu offered not expecting Abbas to say yes, and Abbas said yes. Both would face a firestorm, and then will see how good Obama's diplomacy is.
Migrants rush train tracks as Budapest station reopens (dpa)
from the article: Netanyahu amenable to Palestinian state within temporary borders