SOPOT, Poland (AFP) - European Union foreign ministers on Friday groped to find common ground on a Palestinian bid for full UN membership that again has exposed fissures within the 27-nation bloc. Arriving for two days of talks in this sunny Polish seaside resort, several ministers stepped up to urge the EU to speak with a single voice just weeks before the Palestinians are to formally submit a request for membership. But EU foreign policy chief Catherine Ashton, as well as ministers, said a single position on the diplomatically delicate issue remained elusive, as the Palestinian proposal remained unknown. "For all those who really seek a Middle East solution, it's clear that it's crucial for the European Union to have a united position," said Belgian Foreign Minister Steven Vanackere. As Israel's leading economic partner and the Palestinians' leading donor, "we are partners and hope to become actors. But to become an actor we must have a common position," said Polish Foreign Minister Radoslaw Sikorski. And France's Alain Juppe said on his way to the talks that "the 27 countries should speak with one voice" while warning that the bid risked triggering a dangerous diplomatic confrontation. Europe stands divided on the question, with Germany and Italy publicly opposed but Spain pledging to vote in favour, on or around September 20, when world leaders gather in New York for the 66th session of the General Assembly. Frustrated by the stalemate in peace talks with Israel, on hold since last September due to an intractable dispute over Jewish settlement building, the Palestinians are seeking statehood recognition despite staunch opposition from many quarters, notably Israel and the United States - and some Europeans. "Unilateral steps are not reasonable," said German Foreign Minister Guido Westerwelle. "We want a two-state solution to be reached through negotiations." While Dutch Foreign Minister Uri Rosenthal sided with opponents of the Palestinian move, also calling for a peace deal "based on an agreement between all parties," tiny Luxembourg urged a compromise. "We cannot give nothing to the Palestinians," said Foreign Minister Jean Asselborn. The EU needed to hammer out an option "to give them dignity", he said. But Ashton, just back from a three-day bid to revive direct talks between Israel and the Palestinians, said the union first needed to see exactly what the Palestinians proposed before broaching a common stand. "There is not a resolution before us on which we should take a decision ... there are many discussions going on," she said. "The Palestinians will have to decide which resolution they put forward." Palestinians expect "more than 150" of the 192 UN member countries to endorse full Palestinian membership.