John Bolton has been called in to testify in the impeachment inquiry into US President Donald Trump.
The former National Security Adviser has been summoned by the House of Representatives investigators.
The US President is being investigated for pressuring Ukraine to investigate former US Vice-President Joe Biden and his son.
Trump denies the claims.
Bolton, who has spoken against the president on the matter, has been asked to testify on November 7.
Landmark Myanmar Rohingya genocide case opens at UN's top court
A landmark case accusing Myanmar of committing genocide against minority Rohingya opened at the United Nations' top court on Monday.
Indian rocket launch loses control after liftoff in fresh blow to ISRO
An Indian rocket carrying 16 loads of equipment and experiments including an earth surveillance satellite went off track after liftoff on Monday in a fresh setback to the workhorse launch vehicle of the Indian Space Research Organisation.
Homeland Security to send hundreds more officers to Minnesota
The US Department of Homeland Security is sending "hundreds" more officers to Minnesota, Homeland Security Secretary Kristi Noem said, after tens of thousands of people marched through Minneapolis to protest the fatal shooting of a woman by an immigration agent.
India proposes forcing smartphone makers to give source code in security overhaul
India proposes requiring smartphone makers to share source code with the government and make several software changes as part of a raft of security measures, prompting behind-the-scenes opposition from giants like Apple and Samsung.
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