In a matter of days, Europe and the world has been transformed. 

Russia's invasion of Ukraine has upturned the post-Cold War consensus that has dominated our lives for three decades. 

Is the West itself despite all this a stronger entity? Where does America lie in all of this? And what about Russia, the old enemy turned new menace today? 

Emma Ashford, a senior fellow at the American foreign policy think tank, the Atlantic Council, takes Kiran through the geopolitics of then and now and tries to unravel what went wrong, as well as what could happen in the next few months. 

Sources: ABC Nightline