US Secretary of State John Kerry is in Russia to try to bridge the divide with Washington over the Syria conflict.
He is to have talks with President Vladimir Putin in Moscow but the two disagree on the future of President Bashar al-Assad.
Russia, which supports Mr Assad, refuses to back US pressure designed to force him to step down.
The US recently said it does not rule out providing arms for the Syrian opposition.
Source: BBC. Read full article. (link)