TIMELINE-Ukraine's politics since the Orange Revolution

(Reuters) - Ukraine's President Viktor Yushchenko on Wednesday threatened to call a snap election, accusing his prime minister of effectively wrecking the coalition.

Prime Minister Yulia Tymoshenko, Yushchenko's "Orange Revolution" ally, has been at odds with Yushchenko over practically every policy since she took office.

Here is a chronology of political events since the Orange revolution.

Nov 22, 2004 - Supporters Yushchenko demonstrate in Kiev dressed in orange after results show Prime Minister Viktor Yanukovich in the lead in the second round of an election to decide who will succeed President Leonid Kuchma.

Dec 3 - Supreme Court rules the vote rigged and invalid and orders second round re-run on December 26 after parliament votes to sack Yanukovich's government.

Dec 28 - Yushchenko wins the election with 51.99 percent. Supreme Court rejects Yanukovich's complaints of irregularities and he resigns as prime minister on New Year's Eve.

Jan 23, 2005 - Yushchenko sworn in as president. Days later, Tymoshenko is approved as prime minister by parliament.

Sept 8 - Yushchenko sacks Tymoshenko government after prolonged infighting and resignation of two top officials. Yuri Yekhanurov, a loyal presidential ally, takes her place.

Jan 10, 2006 - Parliament votes to sack the government over a gas deal with Russia that sharply raises the cost of imports.