Annan trumps Trump on New York building jibe 

Trump Real estate mogul Donald Trump should bid on a United Nations renovation contract if he thinks he can do the job cheaper and better than anyone else, UN Secretary-General Kofi Annan has said.

Trump said the costs of renovating the UN building in New York will rise from US$1 billion ($1.47 billion) to US$3 billion under the UN's own proposals. He argued that he could do the job for US$700 million.

"If that's the case I'm sure he will get the contract and so I would encourage him to bid," Annan said.