Cuba, the only country in the hemisphere not invited to the summit hosted by the Organisation of American States, will be attending a People's Summit in Mar del Plata set up by leftwing groups to counter the official version.
It calls to mind an incident at the last G8 summit hosted by the UK, in 2005 in Gleneagles, Scotland.
The idea grew out of a mayors' summit hosted by Bloomberg Philanthropies in March, which highlighted the need for municipal innovation when budgets are tight.
Jonathan was due to fly to Paris on Friday for a summit hosted by François Hollande, the French president, to discuss the security threat posed by Boko Haram.
In 2002, the rift became public when the Cuban dictator stormed out of a summit hosted by Mr Fox in Monterrey.
Though £5m was spent on the summit hosted by Hague and Angelina Jolie, the investment – tiny in relative terms – got more than 100 states on board.
The Fiji summit, hosted by the government and the UNFPA, focused on how to deal with the health and gender equity problems thrown up by climate change.
The report was released prior to the arrival of the Russian president, Vladimir Putin, in London for an EU-Russia summit hosted by Tony Blair next week.
United Nations general assembly and a key migration summit hosted by the United States president, Barack Obama, will be held next week.
A summit, hosted by Russia, this May led to the first political declaration by the Bric bloc – which was strongly at variance with current US foreign policy.
Last year, during a summit hosted by David Cameron, CIFF pledged to spend more than £500m tackling childhood malnutrition around the world.
