Where Do You Draw the Line?

It's interesting and insightful to observe the outrage of pro-Israel friends in reaction to President Obama's suggestion that an Israeli-Palestinian peace deal would be based on the June 4, 1967 lines - especially from those friends who favor (at least rhetorically) a two state solution to the conflict. 

On one hand, the instant reaction of outrage over the suggestion that Israelis will live in Israel and Palestinians will live in Palestine is proper and expected.  After all, the Middle East peace process is the greatest and most contentious negotiation on earth.  And everyone who has taken Negotiating 101 knows that "The Flinch" is a required reaction to any first offer or bid.  Only by feigning outrage and treating the first proposal as insulting (even if it's actually within your ballpark) can one hope to improve the final offer. 

From this perspective, it makes good sense that Israel's leaders would "flinch" and react with outrage over the 1967 comment.  And by extension, that Israel's supporters abroad would echo this stance as a way to show support for Israel.  Fair enough.

But for the pro-Israel camp, is the outrage over the 1967 lines only a negotiating ploy for external consumption?  What do they think in private?


Where exactly had the Two Staters reckoned that the line between Israel and Palestine would be drawn?  And if the 1967 lines are unacceptable (no argument here), what is a constructive alternative suggestion?   In other words, for those who favor a two-state solution, where is the proposed boundary between the (proposed) two states?

My point in asking the question is that I think many pro-Israel friends have declared themselves to be supporters of a two-state solution without exploring any of the minor little details, like where the states will be.  And which territories each of the two sides will be relinquishing as part of the deal.  Of course the exact details would be pursuant to negotiations, but without having considered the most general substantive outline of this proposal, the Two State Solution is not really a solution, it's just a slogan.