The 1.5 million people left destitute by Burma's cyclone are in increasing danger of disease and starvation, experts said on Wednesday, but its ruling junta said no to a Thai request to admit more aid workers. Thai Prime Minister Samak Sundaravej met his Burma counterpart Thein Sein in Rangoon for 2 hours trying to convince him the former Burma should open up for international relief operations and ease visa rules for aid workers. Early May's Cyclone Nargis swept through Burma's heavily populated Irrawaddy delta rice bowl, leaving up to 100,000 people dead or missing, and many of the survivors homeless and hungry. International aid has amounted to little more than a trickle as Burma's generals resist efforts to open the floodgates to foreign workers and their operations and equipment. Buram's Prime Minister "insisted that his country with 60 million people has a government, its people and the private sector to tackle the problem by them selves," Mr Samak told reporters after returning to Bangkok. "They are confident of dealing with the problem by themselves. There are no outbreaks of diseases, no starvation, no famine. They don't need experts, but are willing to get aid supplies from every country," Mr Samak said. Louis Michel, the European Union's top aid official, had a different view. "There is a risk of water pollution. There is a risk of starvation because the storage of rice have been destroyed," he told reporters in Bangkok before flying to Rangoon to seek better access for international aid workers and relief efforts. "We want to convince the authorities of our good faith. We are there for humanitarian reasons," he said, throwing cold water on suggestions foreign countries move unilaterally on aid. "I think it will not be the best solution," compared to trying to reach a long-term agreement with the government. Reports a tropical depression was swirling southwest of Rangoon which could develop into a major storm sparked concerns on Wednesday a new tragedy could be in the making. But the United Nations weather agency discounted the fears, saying while rain and winds were expected in Burma, there was no sign of a new tropical cyclone forming in the Bay of Bengal region. "With the monsoon season approaching, this type of weather will continue and periods of intensive rainfall will become more frequent," the World Meteorological Organisation said in a statement released in Geneva. "There is no indication of a tropical cyclone forming in the region." In a gesture to critics, Burma's reclusive military rulers have invited 160 personnel from neighbouring Bangladesh, China, India and Thailand to assist in delayed and sometimes chaotic relief efforts. Meanwhile, Three US naval ships were in international waters off Burma waiting for a go-ahead from Burma's generals. So far the US military has made a total of eight aid flights into Rangoon, an official said.