US President Donald Trump threatened on Tuesday to halt annual aid of more than $300 million to force them to the negotiating table. Palestinians slammed the announcement, with President Mahmoud Abbas’ office declaring that Jerusalem was “not for sale.” "Jerusalem is the eternal capital of the state of Palestine and it is not for sale for gold or billions," Abbas spokesman Nabil Abu Rudeina told AFP, referring to Trumps recognition of Jerusalem as Israels capital. The December 6 declaration led Abbas to say the United States could no longer play any role in the Middle East peace process. "We are not against going back to negotiations, but (these should be) based on international laws and resolutions that have recognized an independent Palestinian state with east Jerusalem as its capital," Abu Rudeina said. Trump made the funding threat in a tweet on Tuesday, saying: "We pay the Palestinians HUNDRED OF MILLIONS OF DOLLARS a year and get no appreciation or respect." "With the Palestinians no longer willing to talk peace, why should we make any of these massive future payments to them?" Hanan Ashrawi, a member of the Palestine Liberation Organizations executive committee, said in response: "We will not be blackmailed." “Trump ruined our pursuit of peace, freedom and justice and now blames the Palestinians for the consequences of his reckless actions,” she added. It was not immediately clear whether Trump was threatening all of the budget, worth $319 million in 2016, according to US government figures. The United States has long provided the Palestinian Authority with much-needed budgetary support and security assistance, as well as an additional $304 million for UN programs in the West Bank and Gaza.