Moscow, Tue Jul 2, 2013 - Several countries on Tuesday spurned asylum requests from Edward Snowden, the former US spy agency contractor wanted for leaking secrets, despite an appeal from Venezuela for the world to protect him.

Snowden, who revealed the secret US electronic surveillance program Prism, has applied for political asylum in more than a dozen countries in his search for safety from the espionage charges in the United States.

The 30-year-old is in legal limbo in the transit area of Moscow's Sheremetyevo airport, unable to fly on to a hoped-for destination in Latin America because he has no legal travel documents and no Russian visa to leave the airport.

On Monday, he broke a nine-day silence since arriving in Moscow from Hong Kong, challenging Washington by saying he was free to publish more about its programs and that he was being illegally persecuted.

That ruled out a prolonged stay in Russia, where a spokesman for President Vladimir Putin said Snowden had withdrawn his request for asylum after the Russian leader said he should give up his "anti-American activity".

But while country after country denied his asylum requests on technical grounds, Venezuela, part of an alliance of leftist governments in Latin America, said it was time to stop berating a man who has "done something very important for humanity".

"He deserves the world's protection," President Nicolas Maduro told Reuters during a visit to Moscow.

"He has a right to protection because the United States in its actions is persecuting him...Why are they persecuting him? What has he done? Did he launch a missile and kill someone? Did he rig a bomb and kill someone? No. He is preventing war."

Maduro said he would consider an asylum application. Snowden's request for safety in Ecuador, which has sheltered the founder of antisecrecy group WikiLeaks Julian Assange in its London embassy, has seemingly ended.

US President Barack Obama has made clear to a number of countries that granting him asylum would carry costs.

"MISTAKE"

Snowden has prepared asylum requests in countries including India, China, Brazil, Ireland, Austria, Bolivia, Cuba, Finland, France, Germany, Italy, the Netherlands, Nicaragua, Norway, Poland, Spain, Switzerland and Venezuela, WikiLeaks has said.

But several countries, including Snowden's favored Ecuador, said on Tuesday they could not consider an asylum request from Snowden unless he was on their territory.

Norway said he was unlikely to get asylum there, and Poland said it would not give a "positive recommendation" to any request. Finland, Spain, Ireland and Austria said he had to be in their countries to make a request, while India said "we see no reason" to accept his petition.

France said it had not received a request.

Officials in Russia, which has made clear it wants Snowden to leave, say an embassy car would be considered foreign territory if a country picked him up - possibly a message to leaders of oil-producing countries in Moscow for talks this week.

Snowden's options have narrowed sharply.

Ecuadorean President Rafael Correa was quoted in Britain's Guardian newspaper on Monday as saying he could not consider the asylum request and that giving Snowden a temporary travel pass to fly to Moscow was "a mistake on our part".

"Are we responsible for getting him to Ecuador? It's not logical," he said, adding that Snowden was now Moscow's problem.

Moscow is unwilling to send Snowden to the United States, a move that could make it look weak, and has no extradition treaty with Washington. But it also does not want to damage ties with the United States over a man with whom Putin, a former KGB spy, has little sympathy.

At a meeting with Russian Foreign Minister Sergei Lavrov in Brunei, US Secretary of State John Kerry said he had raised Snowden "from our point of view" despite the affair not being in their domain.

"Russia has never extradited anyone, is not extraditing anyone and will not extradite anyone," Putin's spokesman, Dmitry Peskov, told reporters.

Peskov said Snowden showed no sign of stopping releasing secret US documents and added that he had abandoned his intention of staying in Russia.

In an undated letter to Ecuador's Correa seen by Reuters, Snowden said he was "dedicated to the fight for justice in this unequal world". "I remain free and able to publish information that serves the public interest," Snowden said in the letter.

(For list of countries to which Snowden has applied click here)