Faisal Mekdad was speaking at a meeting of the Organization for the Prohibition of Chemical Weapons in The Hague.
He told the BBC that Syria needed lorries and armoured vehicles to move the chemicals, because ordinary vehicles would give those he described as terrorists the opportunity to attack.
He described as “nonsense” the idea that such vehicles could be used for purposes other than moving the chemical weapons out of the country.
Mr Mekdad spoke to the BBC’s Anna Holligan.
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