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.
Israeli strike kills three people in Gaza as Iran war strains truce
An Israeli airstrike killed at least three people in the Gaza Strip on Tuesday, local health authorities said, the latest violence jeopardising the ceasefire which has been under strain during the Israeli-US war against Iran.
UN body investigating fatal strike on Iranian girls school
A UN inquiry has started investigating a fatal strike on a primary school on the first day of US-Israeli attacks on Iran, one of its members told reporters on Tuesday.
Civilians pay heavy price as war in Lebanon drives death, displacement, UN says
Civilians are paying a heavy price as the war in Lebanon continues to expand, driving death, injuries and displacement the United Nations said on Tuesday.
Afghan Taliban says 400 killed in Pakistan air strike on Kabul hospital
At least 400 people have been killed and 250 injured in an air strike by Pakistan on a drug users' rehabilitation hospital in Kabul, a spokesman of the Afghan Taliban government said on Tuesday, a sharp escalation in the conflict between the neighbours.
Bomb attacks kill at least 23 in Nigeria's Maiduguri
At least 23 people have been killed and 108 injured in suspected multiple bomb attacks in Maiduguri city, capital of Nigeria's insurgency-hit northeastern state of Borno, the state police command said in a statement late on Monday.
