Amid the tragedy, euphoria and confusion in Ukraine, the risks of renewed confrontation between Russia and the west are rising. An east-west struggle over the fate of Ukraine would be a tragedy for the country – increasing the risks of civil war and partition. But while a brutal arm-wrestling match between the Kremlin and the west – with Ukraine as the prize – is a distinct possibility, it is absolutely not in the interests of Russia or the west. On the contrary, the Russians, Europeans and Americans have a common interest in preserving Ukraine as a unified country that avoids civil war and bankruptcy.

Talk of “common interests” between Russia and the west in Ukraine risks being dismissed as pious and unrealistic. It should not be. Just before the downfall of Viktor Yanukovich as Ukraine’s president, there were promising signs that Russia and the EU could work together. When three EU foreign ministers negotiated a shortlived deal with Mr Yanukovich, they were joined by a Russian representative. Vladimir Lukin, the man sent by President Vladimir Putin’s government, is Russia’s human-rights ombudsman and somebody with a background in liberal politics – not a Kremlin stooge.

Of course, the combustible ingredients for an east-west confrontation over Ukraine are also very visible. Over the weekend, Susan Rice, the US national security adviser, warned that it would be a “grave mistake” for the Russian government to send troops into Ukraine. Meanwhile, Sergei Lavrov, the Russian foreign minister, has expressed anger that the deal witnessed by Moscow’s representative unravelled so quickly, and has accused the crowds in Kiev of being led by “armed extremists and pogromists”, as well as “rampaging hooligans” – the kind of talk that could be used to justify Russian intervention.