As soon as a citizen takes aliyah then their country of birth should revoke their passport. They can then travel the world on their Israeli passport. And if they want to renew their "other" passport then they have to reside in their "mother country" and they have to renounce their Israeli citizenship. Massively inconvenient to all the olim, of course, but the fault for that would lie with the Israeli govt, and with no-one else. Pretty simple, I would have thought i.e. no Israeli citizen can hold a foreign passport, and the reason WHY is that the Israeli govt insists on abusing that privilege for its own illegal purposes.
UN aid chief says no warring parties observed Yemen truce (Reuters)
from the article: Report: German passport tied to Dubai hit wasn`t forged