Russia says it opposes a draft United Nations resolution on Syria's use of barrel bombs which is being promoted by France, Britain and Spain because it could jeopardize international talks on restoring peace to the conflict-wracked country.

Britain's U.N. Ambassador Matthew Rycroft said Wednesday the draft has been circulated to some Security Council members and will be circulated to all members "in the coming days."

Russia's deputy U.N. ambassador Petr Iliichev told reporters he hasn't seen the draft. But he said it shouldn't be circulated to the council now because "especially at this very delicate moment we should not jeopardize the efforts that are being undertaken in Vienna."

The Vienna talks on Thursday and Friday are the most serious attempt yet to end the Syrian conflict, now in its fifth year.