Russian President Vladimir Putin attends a joint news conference with Turkish President Recep Tayyip Erdogan (not pictured) after their meeting at the Kremlin in Moscow, Russia January 23, 2019. Photo: Sputnik / Mikhail Klimentyev / Kremlin via Reuters. Russian President Vladimir Putin ordered his military command to put nuclear-armed forces on high alert on Sunday as Ukrainian fighters defending the city of Kharkiv said they had repelled an attack by invading Russian troops. US Ambassador to the United Nations Linda Thomas-Greenfield said that “President Putin is continuing to escalate this war in a manner that is totally unacceptable and we...