Russia may face a grim economic downturn but one would scarcely think so to judge by the sound of sabre-rattling emerging from the Kremlin. Unless, of course, it is intended as a domestic distraction from the gathering gloom.

The double-act of Dmitry Medvedev and Vladimir Putin has come up with a series of security initiatives that seem designed to provoke, or at least irritate, the new administration in Washington. Without even waiting to hear how President Barack Obama intends to conduct his relations with Moscow – something that Joe Biden, his vice-president, may well address on Saturday at the annual Munich Security Conference – the Russian leaders have thrown down the gauntlet.