BERN/GENEVA - Myanmar's Nobel Peace Prize winner Aung San Suu Kyi on Thursday urged foreign governments not to let their companies form joint ventures with her country's state-owned oil and gas company cheap oakley sunglasses until it improved its business practices.

Suu Kyi spoke on the first full day of her first visit to Europe in nearly a quarter of a century - a trip that was disrupted when she briefly fell ill at a press conference in the Swiss capital Bern.

The 66-year-old, who spent two decades under house arrest before being elected to parliament in April, halted the event after vomiting and excusing herself saying "I'm so sorry".

An official Swiss dinner in her honor was cancelled although she did attend a cocktail reception later, Swiss foreign ministry spokesman Jean-Marc Crevoisier said. "She is tired and has gone to her hotel to rest," he told Reuters.

Suu Kyi, who minutes before complained of jet lag and tiredness, arrived in Geneva late on Wednesday at the start of her 17-day trip to Europe which will include stops in Norway, Britain, Ireland and France.

In Bern, Swiss foreign minister Didier Burkhalter said Switzerland was partially lifting sanctions against Myanmar except for an embargo on military weapons that could be used for the "purpose of repression".

Earlier in Geneva, she received a standing ovation at the International Labour Organization , whose director-general Juan Somavia praised her "remarkable courage and determination".

"The Myanma Oil and Gas Enterprise ... with which all foreign participation in the energy sector takes place through joint oakley sunglasses sale venture arrangements, lacks both transparency and accountability at present," she said in a speech to the ILO's annual conference.

"The government needs to apply internationally recognized standards such as the IMF code of good practices on fiscal transparency. Other countries could help by not allowing their own companies to partner MOGE unless it was signed up to such codes," she said.

Responsible investment was the oakley sunglasses discount key to helping her resource-rich country along the path to democracy after nearly 50 years of military rule, she said.

The hugely popular leader of Myanmar's opposition had been fearful until now that if she left Myanmar, the junta whose rule she fought against for two decades would block her return.

But after months of cautious Cheap oakley sunglassesrapprochement with Thein Sein, a former general who convinced her to run in by-elections, she accepted an offer to go to Thailand to attend the World Economic Forum on East Asia two weeks ago in one of the clearest signs yet of her confidence in Myanmar's reforms.