Who will pay to save Ukraine?

In fine voice - despite the cold - Ukrainians in Maidan, Kiev's main square - singing the national anthem. But Ukraine may need more than patriotic songs to rescue it from its currently precarious situation. The Russian prime minister, Dmitry Medvedev, has said Moscow regards the turmoil in Ukraine has a threat to Russian citizens and Russian interests. One Ukrainian opposition leader ,Oleh Tyahnybok, says he had information that Russian military ships with marines on board have arrived in the Black Sea port of Sevastopol. Ukraine's political future is more uncertain than ever. And its economic outlook seems bleak. Its central bank governor has just resigned.

Back in December its now ousted president, Viktor Yanukovych, agreed a $15 billion rescue deal with the Kremlin. Chris Weafer is a Moscow based economist and he told us what he thought of that deal.