The Mare Nostrum Operation was launched by the Italian Government on 18 October 2013, as a military and humanitarian operation aimed at tackling the humanitarian emergency in the Strait of Sicily, due to the dramatic increase in migration flows. The Operation ended on 31 October 2014,coinciding with the start of the new operation called Triton. This Operation was an upgrade of the force for monitoring migration flows already operating within the operation Constant Vigilance, which the Italian Navy has been conducting since dal 2004, permanently deploying a ship in the Strait of Sicily along with maritime patrol aircraft.