Thousands of opposing demonstrators are on the streets of Ukraine capital Kiev this afternoon as a government power-struggle continues to unsettle the country.
President Viktor Yushchenko, long at odds with his prime minister, issued a new threat to dissolve parliament on Saturday as his supporters and detractors staged rallies more than two years after "Orange Revolution" upheavals.
The pro-Western Yushchenko has been sniping for months with Prime Minister Viktor Yanukovich, the man he defeated in 2004 after weeks of mass protests over election fraud.
The president, his powers cut by constitutional change, accused Yanukovich this week of illegally trying to expand the parliamentary coalition propping his government and suggested a new election would reveal what Ukrainians really wanted.
He was more explicit today in saying he could dissolve the chamber and hold a new parliamentary poll.
"If the actions of the majority in parliament do not return to a constitutional basis, I will sign a degree dissolving parliament," he told a congress of his Our Ukraine party.
He issued a series of demands to parliament, including a call to approve a law barring deputies from switching parties while in office. Our Ukraine members unanimously approved a call for a new parliamentary election.
Thousands of backers of the more Moscow-friendly Yanukovich massed in a central square to denounce any suggestion of a new election in the ex-Soviet state.
A few hundred meters away, separated by police on horseback, supporters of Ukraine's opposition, which has long called for a new election, were preparing a rally of their own.
Former Prime Minister Yulia Tymoshenko, the president's ally from the Orange Revolution and now the opposition's top figure, is due to address demonstrators later.
Yushchenko reluctantly appointed Yanukovich prime minister after his own allies scored badly in a parliamentary election a year ago and were unable over four months to form a government.
Yanukovich agreed to leave intact the president's policies of seeking membership of NATO and the European Union. But his government has consistently chipped away at the president's authority, passing a law in December further curbing his powers.