He beat Jeremy Hunt in a ballot of party members and will enter Downing Street on Wednesday.
Seoul says it scrambled jets and fired hundreds of rounds after a military plane twice violated its airspace.
With temperatures set to soar in the coming days, how can the UK keep cool and carry on?
Assessments of how likely an attack is will cover all forms of terrorism, irrespective of ideology.
Lancaster University says it was hit by hackers in a "sophisticated and malicious" phishing attack.
Britain's Duncan Scott, the bronze medallist, refuses to share the podium with China's 200m freestyle gold medallist Sun Yang, who served a three-month drugs ban in 2014.
Home Office revokes the farm's licence to grow hemp, although it is appealing against the decision.
Sarah Boyle underwent chemotherapy and a mastectomy before the mistake was noticed.
The films at the Toronto Film Festival that could be the frontrunners at the next awards season.
Queen's signature song reaches the YouTube milestone, but it's still not in the site's Top 100.
Jazz star and presenter YolanDa Brown says politicians should appreciate the benefits of music education.
Rising singer talks Bob Dylan, touring with Neil Young and America's intolerance of immigrants.