WARSAW (AFP) - Israel's Prime Minister, Yitzhak Rabin, laid a wreath to mark the 50th anniversary of the Warsaw Ghetto uprising. Mr Rabin, making the first visit to Poland by an Israeli head of government, and the Polish Prime Minister, Hanna Suchocka, laid wreaths at the bunker of the young Jewish leader of the April 1943 revolt against Nazi occupation, Mordechaj Anielewicz, who finally committed suicide rather than surrender. Hundreds of Jews from all over the world have come to Warsaw for the two-day ceremonies that began on Sunday with three Roman Catholic bishops joining rabbis for a service in the city's synagogue. 'We cannot forget the past, but . . . we look forward to a better world,' Mr Rabin said, 'and for the elimination of the remnants of fascism, Nazism and all racist movements.' Polish Jews implored the US Vice-President, Al Gore, also at the ceremonies, not to allow the Holocaust's horrors to be repeated in Bosnia. 'The world must do more to stop these outrages,' Mr Gore said.