As moves accelerate to bring Crimea formally under Russia's rule.

Talks continue to get Moscow to back down from the region which has a mainly ethnic Russian majority.

Opposition leader Vitali Klitschko is in Dublin for the European People's Party annual congress. It has been dominated by the situation in Ukraine since day one.

The former professional boxer says a solution must be found to resolve the crisis.

SOUNDBITE) (English) UKRAINIAN FORMER BOXER AND OPPOSITION POLITICIAN , VITALI KLITSCHKO, SAYING:

"We have a dream, but it is very important to make you dream true. I know better than anyone, no fight no win, and that why we have to fight for our dream. But the fight is not easy, there is very big challenge. We have good example, good example in our neighbour countries, our Western countries like Poland, Czech Republic, Hungary who make big changes."

Russian troops entered Crimea following months of pro-European protests that saw Ukrainian Pr