KIEV, June 22 (Xinhua) -- Ukraine's President Viktor Yushchenko's Our Ukraine party, former Prime Minister Yulia Tymoshenko's bloc and the Socialist Party on Thursday agreed to form a coalition government.

    "I have the great honour to announce the news awaited by the country for many months," Tymoshenko, who will be reinstated as prime minister under the deal, told the parliament.

    The coalition parties will hold a 243-seat majority in the 450-member parliament. Their next task was to begin naming the government, but Tymoshenko said that would not happen before Tuesday.

    Under Ukraine's revised constitution, the new government must be formed within 30 days of a governing coalition being formed.

    The three parties have struggled for nearly three months to overcome differences on economic and foreign policy issues and lingering distrust after their first union collapsed.

    The parties led the 2004 "orange revolution," which brought Yushchenko to power after a protracted presidential election.

    No party in the ex-Soviet republic won a majority in the March parliamentary elections.

    The opposition Regions Party, which garnered most of the votes but was kept out of power, secured 186 seats in the parliament.

    Tymoshenko, who made investors wary with her willingness to intervene in the economy and her support for re-nationalization during her stint as premier last year, promised that economic policies of the new government would be "wise and predictable."

    She also vowed to review a controversial gas deal that Kiev struck with Russia early this year under which the price of Ukrainian gas imports nearly doubled.

    "All relations concerning gas deliveries to Ukraine today require deep additional revision," Interfax news agency quoted her as saying. Enditem