Yulia Tymoshenko, the leader of an eponymous pro-Western bloc, who backed President Viktor Yushchenko during the 2004 "orange" revolution, said she would continue to press for the dissolution of the Supreme Rada.
"Holding the roundtable meeting has proved that two polar political forces have emerged in parliament, which cannot be brought together by a roundtable," she said.
President Yushchenko launched roundtable talks last week with the leaders of all parliamentary factions, and prominent political and public figures, but the parties to the talks have failed to sign a final document setting down the principles for forming a new national unity coalition.
Tymoshenko said last week she would not sign a national unity pact sought by Yushchenko.
But Oleksandr Moroz, the speaker of the Supreme Rada and leader of the Socialist Party, part of Ukraine's anti-crisis coalition formed earlier this month, said the formation of a broad coalition in the Rada did not depend on the signing of the document.
"We must not link it [the national unity pact] with the formation of a coalition. This is a document laying down the [principles for] the country's strategy," he said.
The anti-crisis coalition, comprising the Party of Regions, the largest faction in the Rada, led by Yushenko's former arch-rival Viktor Yanukovych, Moroz's Socialist Party, and the Communists, nominated Yanukovych for prime minister earlier this month.
President Yushchenko is now facing a dilemma between confirming his "orange" revolution rival Yanukovych as prime minister or dissolving parliament - a right he received after the assembly missed a 60-day deadline for forming a new government on Tuesday. He has until August 2 to decide how to respond to Yanukovych's nomination.
