Hundreds of people have been evacuated from hotels and beaches in Greece as firefighters tackle dozens of wildfires across the country.
Iran's foreign minister made a brief and unannounced visit to the G7 summit in France on Sunday.
International leaders gathering at the G7 summit are reportedly nearing an agreement to help fight fires in the Amazon rainforest.
The French and German leaders say the record number of fires in Brazil's Amazon rainforest is an international crisis which must be discussed at this weekend's G7 summit.
Russian medics who treated radiation victims after a military explosion in the Arctic had no protection and now fear they were irradiated themselves.
French President Emmanuel Macron has said the record number of fires in the Amazon rainforest is an "international crisis" that needs to top the agenda at this weekend's G7 summit.
Boris Johnson is meeting Emmanuel Macron in Paris for Brexit talks, with the French president saying the UK's vote to quit the EU must be respected.
Boris Johnson is to meet Emmanuel Macron later, hours after the French president insisted reopening negotiations is "not an option".
US Secretary of State Mike Pompeo has praised Denmark amid a public row over Greenland that saw President Donald Trump cancel a visit to the country.
Brazil's Amazon rainforest has seen a record number of fires this year, according to new data from the country's space research agency.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.