Two boats bound for Greece have capsized off the coast of Turkey, killing at least 33 people, including a number of children. More than 400 people have been killed trying to reach Europe so far this year amid the greatest refugee crisis since World War II. This comes as up to 35,000 Syrians have massed along the Turkish border amid intensified airstrikes and fighting around the Syrian city of Aleppo. Turkey has kept the border closed for a fourth day today. The refugees are said to be sleeping in open fields in the cold.