Hillary Clinton ordered to answer questions about private email use

Hillary Clinton has been ordered by a US federal judge to answer questions in writing from a conservative legal advocacy group about her use of a private email server during her tenure as secretary of state.

US District Court Judge Emmet G. Sullivan issued the order on Friday as part of a long-running public records lawsuit filed by Judicial Watch. The judge's decision is only a partial victory for the group, which had sought to question the Democratic presidential nominee in person and under oath.