This is the little boy on the beach we can remember with a smile - not lying face down and lifeless in the sand, but playing in it with joyful abandon.
His name is Hussein and, like that other little boy who washed up on Turkey's shore and broke the world's heart, this 5-year-old's short life has been shaped by conflict.
Hussein is growing up in Gaza where years of violence have reduced entire communities to rubble but, at least for a day, he was free to be a child and romp about in the sand. He told us, "I don’t know how to swim in the sea yet but I know how to make a mini pool: I dig a hole in the sand like this and wait for a big wave to come and fill it with water.”
In 2015, a staggering one in nine of the world's children lived like Hussein in areas affected by conflict, while more people were displaced from their homes than at any other moment since World World II.
The following photos bear witness to the lives of children in this historic year, and reveal UNICEF's powerful work to protect and support them in 190 countries.