From the BBC, a look at the startling speech Russia's President Vladimir Putin gave Saturday to an international security conference in Munich:

Afterwards in the corridors there were dark mutterings by some about a new Cold War.

Others were less gloomy, dismissing President Putin's performance as one of Russia's periodic bouts of letting off steam at its diminished world status.

But it has made an impression.

For the last few years, as one observer suggested, it was the former US Defence Secretary, Donald Rumsfeld, who was the man everybody loved to hate at this conference.

President Putin's performance has single-handedly switched the spotlight from the US to Russia.