Russia-leaning president Viktor Yanukovich has scrapped Ukraine's plans to join the Western military alliance, dissolving the commissions on European and NATO integration established after the Orange Revolution.
Yulia Tymoshenko was refusing to concede her narrow defeat by Viktor Yanukovich in Sunday's Ukraine elections. Many say it's doubtful she can prove violations of fraud in the brief period allowed for court challenges.
Prime minister Tymoshenko claims sabotage is behind raid to snatch Russian gas contracts.
Ahead of a major summit April 2-4, Germany is leading the opposition against their accession.