The leaders are due to discuss ways to tackle global warming and to provide more assistance to Africa. They are expected to call for urgent action to combat global warming but set no measurable targets.
The leaders are also expected to issue a statement on fighting terrorism. The document had been planned before the summit, but reports say it will now be modified to reflect the events in London, where at least 37 people were killed.
The G-8 comprises the United States, Britain, Russia, Italy, Japan, Canada, France, and Germany.
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