Vietnam prohibit current affairs discussions on social media
Vietnam is a one-party communist state and the authorities maintain a tight grip on the media.
A new internet decree in Vietnam that would restrict online users from discussing current affairs was heavily criticised by the US government.
The law announced last week and due to come into force in September, says social media should only be used for "exchanging personal information".
The US embassy in Hanoi said it was "deeply concerned" by the decree.
Vietnam has convicted at least 46 activists, including bloggers, for anti-state activity this year.
The law, known as Decree 72, bans the online publication of material that "opposes" the Vietnamese government or "harms national security".
It also specifies that social networking sites such as Twitter and Facebook should only be used "to provide and exchange personal information".
The law would also require foreign internet companies to keep a server inside Vietnam.
Vietnam is a one-party communist state and the authorities maintain a tight grip on the media.