The U.S. says it is pressuring Russia to expel an intelligence contractor to the United States to face espionage charges for his disclosure of clandestine American surveillance programs.
In his secretive hide-and-seek run for asylum, Edward Snowden had been booked on a Monday flight from Moscow to Havana, with his possible eventual destination Ecuador, where he is seeking asylum. But the flight to the Cuban capital left with no sign of him on board.
WikiLeaks founder Julian Assange, whose secret-disclosing organization is assisting Snowden, said the American fugitive is safe, but declined to disclose where he is.
White House spokesman Jay Carney said the U.S. has frequently returned criminal suspects to Russia and said it expected to Russia to turn over the 30-year-old Snowden to American authorities.
Carney criticized China for what he said was Beijing's "deliberate choice" to allow Snowden to fly Sunday from Hong Kong to Moscow. He said the Chinese decision "unquestionably" damaged relations between the U.S. and China.
U.S. Secretary of State John Kerry, on a visit to India, said U.S. authorities "don't know, specifically, where [Snowden] may head, or what his intended destination may be."
Ecuador's foreign minister, Richard Patino, said at a news conference in Vietnam that Snowden had asked for asylum but he "can't give information on Snowden's whereabouts." Patino said his government has been in contact with Moscow.
Kerry said it "would be deeply troubling" for Hong Kong and Russia to allow Snowden to continue his international journey to escape prosecution in the U.S.
National Security Council spokeswoman Caitlin Hayden says the White House is disappointed that Snowden was allowed to leave Hong Kong despite a "legally valid" request for his arrest. The statement early Monday says the United States has registered "strong objections" with authorities in Hong Kong and the Chinese government. Assange said Snowden had a "refugee document of passage" from the Ecuadorian government before leaving Hong Kong.
Ecuador says it is analyzing Snowden's request for asylum. Patino said it would consider the asylum request based on the "principles of its constitution."
Quito has often criticized U.S. foreign policy, and Patino noted that the U.S. has refused in the past to extradite "fugitive bankers...who have hurt the interests of many Ecuadorians."
U.S. officials say Snowden's passport was revoked before he left Hong Kong for Moscow. The government has advised countries where Snowden may pass through or serve as his final destination that he is wanted on felony charges and should not be allowed to travel internationally.
Ecuador has sheltered Assange at its London embassy for the past year to prevent his possible extradition to the Sweden where he is under investigation for sexual assault. His lawyers say Assange fears he will be sent to the United States in connection with the group's publication of secret U.S. diplomatic cables in 2010.
Snowden leaked documents showing that U.S. intelligence services have gathered data for years about patterns of telephone and Internet use. He said he believes the programs violate the privacy rights of citizens.
A senior administration official sharply criticized Snowden's motives, saying his focus on transparency and individual rights "is belied by the protectors he has potentially chosen." The official listed China, Russia, Cuba, Venezuela and Ecuador, saying Snowden's failure to criticize those governments shows his "true motive" was to harm U.S. national security.
Senior U.S. officials have said the surveillance programs do not monitor the content of phone conversations, but look for patterns in the metadata, including information on the time, date and numbers called.
U.S. authorities also have said the programs prevented at least 50 terrorist attacks worldwide since the September 11, 2001 attacks on the United States. They have accused Snowden of weakening their ability to foil future plots.