The prime ministers of Poland and Ukraine have sought to alleviate UEFA fears over the progress of their preparations to host Euro 2012.
Ukraine Prime Minister Yulia Tymoshenko and her counterpart Donald Tusk also signed an agreement to set up a body to co-operate on the vast amount of work both countries need to complete, such as modernising transport and building stadiums.
Michel Platini, head of European football's ruling body UEFA, expressed alarm in January that the two former Communist countries were falling behind schedule.
'We expected and can continue to expect critical warnings from UEFA. It is the responsibility of UEFA and Mr Platini to show every single day what is not yet satisfactory,' Tusk told a news conference.
'We both are, both governments, working as fast as we can, and I am convinced 100 percent that we will manage it.'
Tymoshenko said she believed work had considerably improved since the two new prime ministers were sworn in, he last November, she a month later.
'I think that our meeting, the signing of the appropriate documents and also the recent introduction in our countries of a number of necessary measures will change the position and view of Mr Platini as to the quality of preparations,' she said.
Since Platini's remarks, Ukraine solved a construction dispute surrounding its main Kiev stadium that threatened to prevent it from hosting the final, while the western city of Lviv found a contractor to start building its stadium.
Later on Friday, Platini cautiously welcomed the recent progress and said UEFA would do 'everything necessary' to ensure the tournament went ahead in Poland and Ukraine.
'When we expressed our concerns in January it was because we found the organisers had been sleeping a little,' Platini told reporters following a UEFA executive committee meeting in Liechtenstein.
'Now they have woken up and we have woken up so there has been some headway. But we will still have to wait a few months to see if things are really improving.'