The US is "deeply concerned" over a sweeping new internet law in Vietnam which bans bloggers and social media users from sharing news stories online.
The decree, seen as a further crackdown on online freedom in the authoritarian country, says sites such as Facebook and Twitter should only be used "to provide and exchange personal information".
"We are deeply concerned by the decree's provisions that appear to limit the types of information individuals can share via personal social media accounts and on websites," the US Embassy in Hanoi said in a statement on Tuesday.
Decree 72, signed by Prime Minister Nguyen Tan Dung and made public last Wednesday, stipulates that internet users should not use social networks to share or exchange information on current events.
It is not clear how the law will be implemented or the penalties faced, but commentators said it could in theory make it illegal to share links to stories or even discuss articles published online in Vietnam's state-run press.