United Kingdom

I'm not. I'd like to see it prevented, it's just that I don't see how it can be and how Labour could go all out "Stop Brexit" without bringing UKIP back and thus helping the Tories.

It can't serve any progressive good to put stopping Brexit first when any party putting stopping Brexit first would have to lose the next election. Labour would lose votes and seats on an explicitly "stop Brexit" platform and the Liberal Democrats are still doomed to stay low in votes and seats, and can't gain seats from any party other than Labour-they won't take any seats from the Tories for decades to come. It's impossible for a "stop Brexit" strategy to create clear blue water for any decent party in the UK or to lead to the election of a progressive government.

I'd like to see Brexit stopped...but it can't be stopped by insisting on pledges to stop it during the next election.
What is so indefensible about focusing first on getting the Tories out, and THEN pushing to stop Brexit(especially since the May government is on tenterhooks and could fall at any time)?

As to Corbyn, while I recognize why you personally have an issue with him(an issue you'd have had with any possible Labour leader going into that election, given that we can't any alternative figure would have made different choices) I won't apologize for standing with the first decent, principled human being who's led the Labour Party in decades-the first one who has cared about working people and the poor in decades(the party stopped fighting for them after 1987 when Kinnock started "modernizing" or, if we're honest, Toryizing the party), the first ever to challenge the morally indefensible alliance with the House of Saud, the first in a generation to acknowledge that there is no longer any justification for the Bomb and no civilized case for ever using it again.

Not sure why it's offensive to you that people in the rest of the world might admire someone like that, the first leader of a UK(rather than Scottish)party in decades who has actually supported a clear break with the Thatcherite consensus.

Or why it wouldn't bother you that, had Corbyn been deposed, Labour would have gone right back to Ed Miliband's policies or, indefensibly, gone to the RIGHT of those policies-even thought there are no positions to the right of Ed Miliband that can be called Labour in any recognizable universe.

You weren't going to get a better hearing for Scottish independence from Owen Smith OR from Yvette Cooper, Andy Burnham or Liz Kendall.