Operation Mare Nostrum by Frontex's Operation Triton, which operates a smaller search and rescue capability. Unlike Mare Nostrum, Operation Triton focused on border protection rather than search and rescue, and operates closer to the Italian coast The termination of Mare Nostrum has been criticized as a cause of the increased death rate among migrants to Europe in the Mediterranean, which increased tenfold between 2014 and 2015. Two major migrant shipwreck disasters which together killed more than 1000 people within the span of a week in April 2015 led to calls to renew the operation. The operation involved the units of the Italian Navy
Exultavit cor nostrum campaigns such as against the Assassins, and suggested joint efforts between the Mongols and the Christians against their common enemy, the Egyptian Mamluks. The letter also expressed Hulagu's desire to return Jerusalem to the Christians. King Louis sent John and the letter along to Pope Urban, and John probably returned to Maragha in late 1262. Exultavit cor nostrum Exultavit cor nostrum is a letter, also known as a Papal bull, from Pope Urban IV to the Mongol Ilkhanate leader Hulagu in 1263/1264. The letter was evidently in response to a message brought to Urban by John the Hungarian, who claimed