Photo taken on July 3, 2016, shows flowers laid in front of a Spanish restaurant in memory of victims killed in an attack in Dhaka's diplomatic enclave Gulshan, Bangladesh, July 3, 2016. With all the national flags at government and semi-government offices and foreign missions down at half-mast, Bangladesh is mourning on Sunday the deaths of victims of the country's first-ever hostage crisis involving militants. (Xinhua)