LONDON (Reuters/AFP) - US President Barack Obama said on Wednesday he believed a two-state solution for Israel and Palestine was achievable but urged the Palestinians to talk to Israel over statehood rather than seeking UN recognition. "My goal, as I set out in a speech I gave last week, is a Jewish state of Israel that is safe and secure and recognised by its neighbours and a sovereign state of Palestine in which the Palestinian people are able to determine their own fate and their own future," Obama told a news conference in London. "I am confident that can be achieved." Meanwhile, the Palestinians vowed on Wednesday to push ahead with plans to seek UN backing as long as talks are off the agenda, prompting Barack Obama to warn it would be a "mistake." "I strongly believe for the Palestinians to take the United Nations route rather than the path of sitting down and talking with the Israelis is a mistake," Obama said in London at a joint news conference with British Prime Minister David Cameron. Since the collapse of direct peace talks late last year, the Palestinian leadership has been pursuing a strategy aimed at securing UN recognition of their promised state on 1967 borders, drawing sharp criticism from Israel and Washington. "The only way we are going to see a Palestinian state is if Israelis and Palestinians agree on a just peace," Obama said, warning that peace would only work if both sides agreed to a "wrenching compromise." Obama's remarks came after a week of high-level debate on the Israeli-Palestinian conflict which has left the prospects of a revival of peace talks more remote than ever. Earlier on Wednesday, Palestinian President Mahmoud Abbas said Israel was offering "nothing we can build on" for peace and that without progress he will seek UN recognition of Palestinian statehood in September. He told the Palestine Liberation Organization on Wednesday that Israeli Prime Minister Benjamin Netanyahu's speech to the United States Congress on Tuesday "travelled far from peace," dictating solutions before negotiations even begin. Abbas told the Palestine Liberation Organization Netanyahu's speech to the United States Congress on Tuesday "travelled far from peace," dictating solutions before negotiations even begin. He said he would consult Arab states at the weekend about US President Barack Obama's latest ideas for restarting the peace process and Netanyahu's negative response to them. "We said in the past and we still say that our choice is negotiation, negotiation and nothing but negotiation. But if nothing happens by September we will go (to the UN to ask for recognition by its 192 member states)," Abbas said. "Our aim is not to isolate (Israel) or to de-legitimise it. It is not an act of terror and not a unilateral act." Tayeb Abdelrahim, Abbas's chief of staff, said that Netanyahu's reception in Washington showed bias on the part of US lawmakers. "The greeting given to the Israeli prime minister by the American Congress, where he was applauded more than 25 times, made us feel the complete partiality of Congress toward the Israeli prime minister who compromised all the foundations of a just peace in the region," he said in a statement. "If George Washington or Abraham Lincoln were to return from the dead, they would not get such a welcome," he added. Netanyahu said he was willing to make "painful compromises" for peace if the Palestinians would recognise Israel as a Jewish state but he ruled out a division of Jerusalem, any return of Palestinian refugees or any pullback to 1967 borders.