UEFA president Michel Platini has warned Ukraine and Poland not to allow Euro 2012 preparations to fall further behind schedule although he still has faith they can co-host a successful tournament.

At the start of a tour of Ukraine's four host cities, Platini said the stadiums in the capital Kiev and the Western city of Lviv were far from nearing completion but UEFA was pinning its hopes on the assurances of the authorities.

"We have trusted in Ukraine for a long time already and we have trusted in Poland for a long time, and we would like to see that things are moving in the right direction," he said in translated remarks.

But he warned there could be no "step backwards", adding: "The Euro takes place in 2012 and it will never take place in 2013. That is why now some decisions have to be taken."

Economic troubles, a severe winter and political tension have led to long delays in preparations by Ukraine ahead of the 16-nation tournament.

It is five months behind schedule with particular problems in Kiev, which is due to stage the final, and Lviv.

Ukraine has already announced weekly auctions of treasury bills to help raise cash for Euro 2012 - effectively adding to rising domestic debt problems. It also plans to launch a national lottery later this year.

Euro 2012 minister Borys Kolesnikov, earlier in the day announced government plans to stump up $3.3 billion from the 2010 state budget to help modernise stadiums, develop airport infrastructure and build roads.

The government also announced a national agency had been set up to oversee preparations.

Ukraine plans to host matches in Donetsk and Kharkiv as well as Kiev and Lviv.