Macron said he brought four tonnes of food and health cargo with him on his visit.

Satellite image analysis company Maxar Technologies released images of Hmeimim last week depicting heavy transport planes preparing to receive cargo and attack helicopters dismantled, probably ahead of being transported.

The terminal operators, shipping companies and other industries dependent on the movement of cargo argue, spuriously, that these port pollution rules are actually just limits on economic activity.

Eventually quantum computers would help with a range of tasks including "logistics problems such as cargo freight distribution on aircraft or routing of telecoms signals or stored energy throughout the national grid", he said.

Meanwhile, a cargo ship moored in the port of Thessaloniki was swept away in the high winds, leading to a collision with another cargo ship, and damage to both vessels.