The Moscow talks are seen as an attempt by the leaders of both countries to iron out differences.

Russian President Vladimir Putin initially backed Yushchenko's rival Viktor Yanukovych - whose victory was marred by fraud and later annulled.

Yushchenko on Sunday said Ukraine's future was in the EU. He will also tour Central and Western Europe this week.

Yushchenko beat Yanukovych in a re-run of November's disputed poll.

The 26 December repeat run-off was held after the Supreme Court ruled that the original vote - officially won by Yanukovych - had been rigged.

Independent election observers said the re-run had been much fairer than earlier rounds.