STOCKHOLM (Reuters) - The United States is worried over Russia's posture towards Ukraine and will support the country together with NATO allies, U.S. Secretary of State Antony Blinken said on Thursday in connection with bilateral talks with Ukraine's foreign minister.

       Blinken is attending the Organization for Security and Co-operation in Europe's (OSCE) annual meeting of foreign ministers amid tensions between the West and Russia over troop deployments on Ukraine's borders and a migrant crisis with Belarus.

       (Reporting by Humeyra Pamuk and Johan Ahlander; Writing by Niklas Pollard)