World leaders must hold Central Asian regimes responsible for denying global access to information by throwing critical reporters behind bars, CPJ Eurasia researcher Muzaffar Suleymanov told the U.S. Commission on Security and Cooperation in Europe  at a briefing Tuesday on political prisoners in Central Asia.

One big reason for the Internet's success is its role as a universal standard, interoperable across the world. The data packets that leave your computer in Botswana are the same as those which arrive in Barbados. The same is increasingly true of modern mobile networks. Standards are converging: You can use your phone, access an app, or send a text, wherever you are.

CPJ's new analysis identifies Eritrea, North Korea, Syria, Iran as worst

CPJ Deputy Director Robert Mahoney counts down the 10 countries where the press is most tightly restricted. How do leaders in these nations silence the media? And which country is the worst of all? (4:03)

Read CPJ's report on the 10 Most Censored countries for more detail on how censorship works, and which countries were the runners-up.

Authoritarian leader Islam Karimov marked Media Workers Day by calling for an independent domestic press, the state news agency UzA reported, but his long-standing policies of repression belied such statements. The regime is a persistent jailer of journalists, often ranking among the worst in the region. Embattled reporter Abdumalik Boboyev faced official obstruction when he tried to travel to Germany; officials cited his prosecution in 2010 on charges of “insulting the Uzbek nation” as reason. Two other reporters faced retaliation after they participated in media seminars outside Uzbekistan. In the face of official intimidation, domestic media complied with censorship regulations and refrained from covering the popular uprisings that swept the Middle East and North Africa. Mindful of the role the Internet played in the Arab revolutions, Uzbek authorities expanded their list of internally blocked news websites and created a state commission to censor content in the Uzbekistan domain.

New York, January 25, 2012--The Committee to Protect Journalists is outraged by the politically motivated additional sentence handed to Muhammad Bekjanov, the jailed editor of now-defunct opposition newspaper Erk, who has been in prison in Uzbekistan since 1999 on trumped-up charges.

Last week, President Obama signed into law a bill that expands sanctions against Belarus, whose authoritarian leader Aleksandr Lukashenko continues to imprison his opponents and critics. Lukashenko unleashed the latest crackdown hours after the flawed December 2010 presidential vote, which declared him winner of a fourth term. Repression in Belarus is ongoing. Last week, authorities further tightened their grip on the media by restricting access to blacklisted websites. On Monday, a district court in Minsk jailed an independent reporter for filming a one-man protest vigil in front of the KGB headquarters.

Stark regional differences are seen as jailings grow significantly in the Middle East and North Africa. Dozens of journalists are held without charge, many in secret prisons. A CPJ special report

In September 2001, CPJ received a worrisome call. Uzbek journalist Dina Yafasova had been roughly interrogated by the Uzbek National Security Service, which threatened her with imminent arrest and physical abuse unless she revealed sources and names of articles she wrote for international publications. She left the agency deeply shaken and within days had left the country for Denmark, where she sought asylum. 

In 2007, my colleague Karen Phillips suggested we do something to mark World Refugee Day. Initially planning to publish a brief statement, I set about reviewing our data for background, checking in with older journalist cases about their current situation and looking broadly for trends to highlight. As the number of cases began counting into the hundreds, it became clear that what we had was a new indicator of press freedom conditions. Today, we're marking our fifth year of publishing the CPJ survey of journalists in exile, which is based on 10 years of data on 649 cases.