Russia Replaces Commander Of Ukraine Invasion Force 

President Vladimir Putin removed Russia's top commander in Ukraine, just three months after he was installed. <br />Chief of the General Staff Valery Gerasimov will now lead what Mr. Putin terms a special military operation. <br />Gen Gerasimov replaces Sergei Surovikin who has overseen recent brutal attacks on Ukraine's energy infrastructure. <br />The reshuffle comes as Russians claim they are making progress in eastern Ukraine after suffering a series of military defeats in recent months.