Viktor Yushchenko, the embattled Ukrainian president, complained of Russian meddling in Kiev’s domestic affairs ahead of a high-stakes presidential election, which the pro-western leader is expected to lose to a more Kremlin-friendly candidate.

In a Financial Times interview, Mr Yushchenko said Moscow had waged a smear campaign against Kiev and could try to manipulate Ukraine’s electorate – claims that were also made in 2004 when Mr Yushchenko was propelled to power against a Kremlin-backed candidate. Voters remain split in an east-west axis between Russian and Ukrainian speakers.