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.
European leaders rally behind Greenland in face of renewed US threat
Leaders from major European powers rallied behind Greenland on Tuesday, saying the Arctic island belongs to its people, following a renewed threat by US President Donald Trump to take over the Danish territory.
South Korea's Lee says he asked Xi to play a mediating role on North Korea
South Korean President Lee Jae Myung said on Wednesday that much progress had been made in restoring trust with Beijing, and that he had asked Chinese President Xi Jinping to play a role in mediating Seoul's efforts to engage North Korea.
6.7-magnitude earthquake strikes near Baculin, Philippines
A 6.7 magnitude earthquake struck off the Philippines' southern islands on Wednesday, the US Geological Survey (USGS) said, and there were no immediate reports of damage or injuries.
Israel, Syria to share intelligence following US-mediated talks
Israel and Syria agreed during US-mediated talks in Paris to set up a communication mechanism to coordinate on security, intelligence and commercial issues, the three countries said in a joint statement released on Tuesday by the State Department.
Maduro opponent Machado vows to return to Venezuela, wants election
Venezuela's main opposition leader Maria Corina Machado has vowed to return home quickly, praising US President Donald Trump for toppling her enemy Nicolas Maduro and declaring her movement ready to win a free election.
Dubai has launched a major tree-planting drive to mark the 20-year leadership milestone of His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai.
His Highness Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Dubai's Crown Prince and the UAE's Deputy Prime Minister and Defence Minister, has reviewed progress on the Jumeirah Beach 1 redevelopment project.
The United Arab Emirates and Ethiopia have reaffirmed their strategic partnership during high-level talks focused on regional security, humanitarian crises and global cooperation.
