Will there be protests and more police?published at 10:54 British Summer Time 11 June 2021
Protesting and policing at the summit are both more difficult than usual this year because of Covid restrictions.
More than 5,000 extra officers - on top of 1,500 from Devon and Cornwall - will police the summit.
A cruise ship has docked in nearby Falmouth to accommodate all the extra security officers.
Demonstrators have been told they can gather in four approved protesting sites, including one in Exeter - more than 100 miles away.
Police have said they are "not naïve enough to expect that every protest will take place solely in those four sites".
Climate activist group Extinction Rebellion has planned a number of demonstrations, including a march from Plymouth to Carbis Bay.