KYIV, Jan 19 - Russia could double the number of troops it has on Ukraine's border in "relatively short order," Secretary of State Antony Blinken warned Wednesday after meeting with Ukrainian leaders, CNN reported.

Blinken's meetings with President Volodymyr Zelensky and Foreign Minister Dmytro Kuleba in Kyiv Wednesday were the first of three stops the top US diplomat is making this week amid warnings from the US that Russia, which has amassed tens of thousands of troops near near Ukrainian borders, could launch an invasion at any point.