Is Russia preparing to invade Ukraine?

Hectic parleys, hard negotiations, backroom diplomacy, every possible avenue is being explored in order to quell tensions at the Ukraine-Russia border. Experts believe that a full-scale conflict between the two sides is unlikely.

But, with 1,00,000 troops amassed on the Russian side, are Ukraine, the US and Nato (North Atlantic Treaty Organisation) prepared for conflict should Moscow decide to invade the erstwhile Soviet state?