And, for the flamboyant, rumpled, ambitious former London mayor Boris Johnson, there's been some tripping up already.

Carter's comments came during a panel discussion at a retreat for donors to the Carter Centre, an organisation he founded in 1982 that has been at the forefront of election monitoring efforts around the globe for decades.

Australian nurse Kirsty Boden "paid the ultimate price", one of London's top police officers said as the inquest drew to a close.

The mercury reached an all-time high at 45.9 degrees amid a heatwave in Europe that has claimed several lives.

Indonesia's Constitutional Court is poised to block an attempt by defeated presidential candidate Prabowo Subianto to over turn April's election.