Washington (AFP) – US President Joe Biden is willing to meet Russia’s Vladimir Putin “at any time” to prevent a war in Ukraine, according to his top diplomat who said Sunday Russia appeared on the verge of invading its neighbor. In a rapid-fire round of US talk shows, Secretary of State Antony Blinken told CNN “everything we’re seeing suggests that this is dead serious, that we are on the brink of an invasion.” Aggressive military action has already begun in and around Ukraine, which is facing increased shelling from Russian-backed separatist rebels and a force of what Blinken and Western capi…