UN chief set for mission in Burma

Mr Ban has called for the release of all political prisoners
UN chief Ban Ki Moon will arrive in Burma shortly to seek the release of political prisoners including opposition leader Aung San Suu Kyi.
Mr Ban will hold talks with Burma's military leader Gen Than Shwe.
Ms Suu Kyi, a Nobel Peace laureate, has spent much of the past two decades in prison or under house arrest.
Her trial on charges of breaking the terms of her house arrest is about to resume after an interruption of more than a month.
Ms Suu Kyi's lawyers have been appealing against the judge's ban on testimony from three defence witnesses. One additional defence witness will now be allowed to testify.
International outrage
The trial of 64-year-old Ms Suu Kyi has caused outrage around the world.

Aung San Suu Kyi is head of the National League for Democracy party
Critics of Burma's military government have dismissed it as a ruse to keep the opposition leader locked up until after next year's election.
The BBC's Jonathan Head says Mr Ban's two-day visit is risky - coinciding with the resumption of Ms Suu Kyi's trial - but he is calculating he will get meaningful concessions from Burma's military rulers.
Although previous UN visits have been unsuccessful, it is possible the country's leaders are looking for a face-saving way out, and Mr Ban could be the person to deliver it, our correspondent says.
He has called for the immediate release of all Burma's political prisoners, thought to number more than 2,000.
"Through my meetings... I will convey exactly what the international community expects and wishes [regarding] the way they want to see changes in Myanmar [Burma]," he told reporters in Singapore before his departure.
The secretary general may be rewarded with the release of a small number, but our correspondent says that won't appease critics who argue he shouldn't be making this visit at all.
Suu Kyi request
It is not clear if Mr Ban will be allowed to meet Ms Suu Kyi, although he is due to meet members of her National League for Democracy (NLD) and other opposition activists.