Popular lawmaker and candidate for Ukraine's presidency Oleg Tsaryov believes the presidential elections should take place in autumn, after provisions about the federative framework and the national status of the Russian language would be added to the Constitution of Ukraine.

"The minimal term is autumn. Until autumn, they should vote for amendments to the Constitution, and after they fulfill all our conditions, we would be ready to take part in these elections," the nominee said.

Tsaryov urged people from southeastern Ukraine to consolidate and make joint demands to the country's leadership, which, as he believes, must enter into negotiations with the protesters and listen to them.

Earlier, the lawmaker agreed to lead the Southeastern movement for federalization. Only by federalizing Ukraine, it is possible to "save the country from breaking up", the politician pointed out at a news conference in Donetsk.