J Street has grown in influence very quickly. One of the prime reasons, I believe is that in the past 40 years peace never got close to settling the land and right to return questions or how an independent Palestine could be viable. The current 20-40 year old group have very little willingness to go slow about getting to yes. To them a year is a long time. Whether they have staying power is the big question but building momentum for change - yes they have!