The African Union on Wednesday blamed Ivory Coast's self-declared president, Laurent Gbagbo, for the failure of talks so far to resolve the crisis in the cocoa-producing west African nation. "There had been progress in the talks, but Gbagbo went back on his earlier agreement to remove the blockade leading to and from the Golf Hotel where (President-elect) Alassane Ouattara is staying," said a spokesman for Kenyan Prime Minister Raila Odinga, the AU mediator. "Gbagbo has to step down to make way for Ouattara who legitimately won the election," said Odinga representative Salim Lone, speaking for the AU and the Economic Community of West African States. "The request to remove the blockade was because the AU argued that it's difficult to have discussions with a prisoner," Lone said. Ouattara is holed up in the hotel in Abidjan under the protection of U.N. peacekeepers, and the United Nations has blamed Gbagbo's supporters for a string of attacks on U.N. vehicles and troops in the past week. An independent electoral commission declared Ouattara the winner of the country's presidential election in November, but Gbagbo, the incumbent, has refused to step aside. Odinga is now leaving Ivory Coast for Ghana, Burkina Faso and Mali. He'll meet the heads of state of each country to discuss the Ivory Coast crisis, Lone said, denying that Odinga had "given up on ... finding a solution to the crisis. "He's still committed to the African Union and ECOWAS will to first and foremost find a peaceable solution to the crisis. Use of force will be a last resort," Lone said. The United Nations Security Council is due to vote Wednesday on sending 2,000 additional troops to Ivory Coast, bringing the total mission there to more than 11,000 troops and police. The vote was originally scheduled for Tuesday, but Security Council diplomats said it was delayed because Russia had objections to the "political" language in the draft resolution. "Tomorrow, we will adopt the resolution," Ambassador Ivan Barbalic of Bosnia-Herzegovina, this month's president of the council, told reporters Tuesday. Asked whether disagreements between member states led to the delay, Barbalic said "There are no disagreements. It will be adopted." The Security Council is expected to approve the increase unanimously, a diplomat from one of the council's member states told CNN Monday. U.N. officials requested up to 2,000 more peacekeepers in early January. Gbagbo's foreign minister, Alcide Djedje, said earlier this month that the peacekeepers are "complicit with the rebellion" and that the sitting government has "no more confidence in the U.N." The standoff has raised fears of a renewal of the bloodshed suffered after a civil war broke out in 2002. More than 25,000 Ivorians have fled to neighboring Liberia since the current crisis began, the U.N. High Commissioner for Refugees reported last week. ECOWAS has threatened to use "legitimate force" to remove Gbagbo, who met Monday with African Union mediator Odinga. The west African nation was wracked by civil war from 2002 to 2007, when a settlement left the country divided between north and south. The 2010 elections came with high expectations that they would open a new chapter in the country's history. Source: CNN