You approach puts the horse before the cart. Israel does not have to claim to represent all Jews. It does so, whether it likes it or not. Truth is Israel has a hard enough time coping with itself and should not need to worry about sensitivities of people, who don't pay taxes or vote in the country. No other country really does. Equally, Jews don't need to carry responsibility for a country in which they don't vote or pay taxes. Jews are seen as representatives of Israel, whether we like it or not. This is the reality imposed on Jews externally and not created by the Jews and it is part of the historical agenda in which we subsist. However, both Israel's policy and the diaspora need to recognise that externality and address that honestly and that may mean rubbing some people the wrong way and looking more closely and the nature of some political friendships. This is what is at issue.
Thousands gather in Kuala Lumpur for rally urging Malaysian leader to quit (AP)
from the article: Fair-weather friend: Israel's selfish attitude toward Diaspora Jewry