FRANKFURT, Oct 28 (Reuters) - Germany's economy ministry

said on Tuesday that it was continuing talks with the U.S.

government to prevent sanctions directed against Russia from

hitting the German business of Russia's Rosneft.

A "Letter of Comfort" issued by President Donald Trump's

administration would for now provide assurance on the exemptions

for the assets, held under German state trusteeship, while these

negotiations continue, the ministry said in a statement.