President Joe Biden has urged United States citizens in Ukraine to leave the country immediately, citing the threat of Russian invasion amid the ongoing crisis in Eastern Europe.
“It’s not like we’re dealing with a terrorist organisation. We’re dealing with one of the largest armies in the world. It’s a very different situation and things could go crazy quickly,” he added.
Biden also repeated that under no circumstances would he send US troops to Ukraine, even to rescue US citizens in case of a Russian invasion.“That’s a world war. When Americans and Russians start shooting one another, we’re in a very different world,” he said.

Meanwhile, Russia has denied that it is planning to invade Ukraine, but it has strongly opposed its neighbour’s efforts to join NATO.
Moscow wants security guarantees that the US-led alliance will stop its expansion into former Soviet republics, but Washington and NATO have rejected the demand saying they are open to discuss about the arms control measures in Europe.

From :aljazeera