Pro-Russian protesters escort a man detained yesterday, who they said provoked them by trying to sell a pistol, near the seized office of the SBU state security service in Luhansk, in eastern Ukraine April 13, 2014. REUTERS Pro-Russian protesters escort a man detained yesterday, who they said provoked them by trying to sell a pistol, near the seized office of the SBU state security service in Luhansk, in eastern Ukraine April 13, 2014. REUTERS