SHARM EL-SHEIKH (AFP) - Robert Mugabe's spokesman told the West on Tuesday it can "go hang" amid growing criticism of the Zimbabwean president's widely discredited re-election which has seen Washington push for UN sanctions. "They can go and hang a thousand times, they have no basis, they have no claim on Zimbabwe politics at all," spokesman George Charamba said in answer to a question about Western criticism of Mugabe's violence-marred election. Charamba also appeared to reject a Kenyan-style power-sharing deal. "I don't know what power-sharing is," Charamba said. "Kenya is Kenya, Zimbabwe is Zimbabwe." The 53-member African Union was holding closed-door talks on the final day of a summit in Egypt amid intensifying pressure for the continent's leaders to act to resolve the crisis which some fear could destabilise southern Africa. Mugabe, 84, was sworn in for a sixth term after being declared the winner of Friday's election runoff with more than 85 per cent of the vote in a race boycotted by opposition leader Morgan Tsvangirai of the Movement for Democratic Change because of deadly violence and voter intimidation. Amid South African-led efforts to broker a way out of the crisis, Charamba said: "There are two political parties in Zimbabwe that are prepared to discuss - we are talking about a ruling party that has offered dialogue to the opposition." But "we are not promising (Tsvangirai) anything beyond what will emerge from the discussions." The Opposition number two, MDC Secretary-General Tendai Biti, however, said that Mugabe's holding of a one-man election killed off any prospect of a negotiated political settlement and denied any talks were taking place. "While the MDC has pursued dialogue in a bid to establish a government of national healing before June 4, the sham election on June 27, 2008, totally and completely exterminated any prospect of a negotiated settlement," Biti said in a statement. Following Charamba's "hang" comment, Tsvangirai told AFP by telephone that "we don't respond to this sort of thing ... This man is mad." UN Secretary-General Ban Ki-moon pledged to work to broker a solution, repeating his view that the one-man election that gave veteran incumbent Mugabe another term lacked legitimacy. Washington announced on Monday that it was preparing to present a draft sanctions resolution to the UN Security Council and urged African leaders to listen to their own election observers. European governments are also looking at a raft of sanctions, the French foreign ministry said as it assumed the rotating EU presidency. The new measures, which come on top of 2007 sanctions, could include slapping visa bans and asset freezes on members of Mugabe's entourage, said spokesman Eric Chevallier. British Junior Foreign Office Minister Mark Malloch-Brown said any power-sharing deal could involve Mugabe's Zanu-PF party but not the man himself, if Britain were to stump up aid for the shattered Zimbabwean economy. "This very major economic support for the country's economic reconstruction that we and others are willing to offer depends on a government being formed which does reflect the will of the people," he told BBC radio.