Syrian Deputy Prime Minister for Economic Affairs Qadri Jamil on August 3 told reporters that an agreement had been reached for Syria to export crude to Russia in exchange for refined oil products.

"It was an agreement in principle reached during our last visit," Jamil said at a news conference, adding that sanctions imposed by the United States and the European Union were biting into the Syrian economy.

"We have to find an alternative path. I think in the near future we will complete the preparatory stage and move on to a real agreement on the delivery of oil and oil products," he said after talks with Russian Foreign Minister Sergei Lavrov.

Two separate Syrian delegation have visited Moscow this month in order to bargain for crucial economic aid, including a loan, though Jamil said it was too early to go into the details of any such credit.

Syria is one of Russia's last Middle East footholds and hosts a repair and maintenance facility for the Russian navy on its coast. Russia has adamantly opposed any foreign intervention in the country, though Moscow says it is not tied to Assad.

Russia has remained silent on the issue of an oil-for-oil-products swap deal, which could raise questions on the extent to which it might extend help to Assad's government, whose days analysts and some western countries say are numbered.

Earlier this month, Syria's oil minister said oil production was less than 140,000 barrels per day.

EU governments have agreed to ban imports of Syria's oil as well as prohibit European firms from making new investments in its oil industry.