The Baltic state wants closer integration into Europe as Russia's Ukraine meddling raises concerns.
The war-torn country's telecommunications ministry said the ban will be instituted "until further notice."
While the two leaders met in Poland, pro-Moscow rebels took over two Ukrainian military bases in Luhansk, following an air attack Monday.
The secret plea came more than a year after Na Tchuto was arrested in April 2013 from a luxury yacht off the coast of Guinea-Bissau.
The prisoner-swap deal with the Taliban, which led to Bergdahl's release, has many critics in the U.S. and Afghanistan.
More than 100 people have been killed in mining accidents in China since the beginning of 2014.
It is not clear what sparked this latest round of vitriol, or what information the U.S. firms are alleged to have stolen.
The Senate is scheduled to establish privacy limits for the NSA next week, while taking care not to tie down its efforts to counter terrorism.
The November agreement allowed for a six-month extension for a final deal to end sanctions on Iran and remove the threat of war.
One of the Senate's most senior Republicans is in deep trouble with his state's voters.
Leaving no comrade behind is a core military value. But does it apply if a soldier walked away?
The party's gamble that people would value prosperity more than freedom proved correct.
Twenty-five years after student protests rocked China and were bloodily suppressed, an economically ambitious generation prefers to look ahead.
Delos Cosgrove is a hospital chief, cardiac surgeon and Vietnam veteran.
The popular New York Times columnist faces calls to audit his work on sex trafficking after Newsweek's expose of Somaly Mam.
Warplanes, high security and fear characterized an election in Syria that many observers -- and voters -- called a sham.
According to a poll of more than 1,000 Americans, support for evolution has doubled, while belief in "divine-intervention" has decreased.
A new rule requires companies to disclose where they get certain minerals. That’s easier said than done.
Sen. Mitch McConnell (R-Ky.) introduced a bill on Tuesday that attempts to keep the EPA's latest power plant rules from taking hold.
The botnet GameOver Zeus is believed to be responsible for more than $100 million in damages to consumers and businesses.
Governors and policymakers in coal-reliant states have come out swinging against the Obama administration's latest climate proposal.
The G-7 countries are expected to discuss a balance of diverse energy sources and climate change policy.
The former army chief won 96.91 percent of the votes in the Egyptian presidential election.
Hosting the World Cup is expected to cost the nation about $11 billion.
Lashonda Lee Williams is facing assault charges stemming from the alleged incident on a Nashville-to-Houston flight.
Witnesses said a pregnant woman, Latrice Trotter, was Tased by an officer trying to break up a fight.
In the world's fifth-largest country, half a million soccer fans will only be able to move by air -- but airports are an unfinished mess.
“The present climate in Egypt is not suitable for a political satire program," Bassem Youssef said.
Thousands of prisoners have applied for commuted sentences under President Obama's new drug clemency program.
Nigerian police have banned protests in support of the more than 200 girls that were abducted by Boko Haram in April.