Corbin is a supporter of Palestine. That is not news nor particularly unusual on the left. He wants a fair and peaceful resolution to ease the plight of the Palestinians. He is not a holocaust denier, nor does he wish to see Israel exterminated.
The Jewish Chronicle's view of what constitutes 'anti-semitic' may be different from that of an objective outsider. They have already advised their readers not to vote for him. Nothing he can say or do will change that now.
All the rest is rhetoric. He need not, and should not, address all those accusations in detail.
Perhaps not all of them. And I agree with what you say re the JC - my point is that this will become a real problem for him at some point when the mainstream right wing go after him (which wont be until after he is elected, and not until they need to).
IMO he certainly should address point 1 and 2. Not directly to the JC obviously, as this would set a precedent for him and open a can of worms. But there's a HUGE difference between being a Palestine sympathiser and actively supporting (both financially and attendance) a group ran by 'Holocaust Revisioner' Paul Eiser. Let's take a look through his beliefs, which are exactly what Corbyn needs to disassociate himself from asap
· I question that there ever was an official plan on the part of Hitler or any other part of the National Socialist regime systematically and physically to eliminate every Jew in Europe.
· I question that there ever existed homicidal gas-chambers.
· I question the figure of six million Jewish victims of the Nazi assault and I believe that the actual figure was significantly less.
Edit - font colour on cut/paste of quotes.