In reverse order....1. the insistence on the right of return has made the two state solution impossible.  2. It may be true that European Jews spear-headed the founding of the State of Israel, but they were doing so on behalf of all Jews, including the 6-700,000 who moved to Israel from all over the Middle East, and you don't get to tell the Jewish people who gets to lead them.  Jews get to do that...which is what self determination is all about.  The "death and dislocation of the Palestinians" was minimal when compared to the death and dislocation of Sikhs and Hindus when India was partitioned, so if that was far greater level of dislocation was justifiable to accommodate Muslim self determination in India, then the far lesser level of dislocation is also justifiable to accommodate Jewish self determination, in some tiny part of the Middle East where Jews have lived continuously for 3,000 years.