Australia and New Zealand hold ceremonies to mark the centenary of the military landings at Gallipoli during the First World War.
Ceremonies are held in Armenia and around the world to mark the centenary of the start of mass killings of Armenians by Ottoman Turks.
Poland refuses entry to Putin-supported biker group Night Wolves, saying it cannot ensure security for the gang on its WW2 commemorative ride.
Musician questions sex education in Iceland
The African migrants who made a Sicilian palace their home
World perspectives on brutal battle
Is it always necessary to prosecute decades-old crimes?
Europe's 'something must be done' moment
Why the wounds of Armenia's past have not healed
The migrant influx is an explosive issue so EU leaders will tread carefully at an emergency summit, writes the BBC's Katya Adler.
John Torode finds out why Australians celebrate a military disaster