Chinese President Xi Jinping on Wednesday told former Russian President Dmitry Medvedev that relevant parties to the Ukraine crisis should remain rational and exercise restraint, engage in comprehensive dialogue and address common security concerns through political means, state-run media said.China "upholds objectivity and fairness" and actively promotes peace talks, Xi told Medvedev, currently deputy chairman of Russia's Security Council, during their meeting in Beijing, according to the official Xinhua News Agency.Medvedev, who was invited by China's ruling Communist Party as leader of t…READ FULL ARTICLE