Brahimi's plan for an end to the Syrian crisis centres on a transitional government, but has left vague Assad's role. The opposition rejects anything but Assad's overthrow and says the government crackdown has been too fierce to accept dialogue.
He declined to disclose the names of the vessel charterers and the recipient of the deliveries, which amount to around 42,000 tonnes of gasoil worth close to $40 million at current market prices.