A few points. The Ukrainian Parliament voted to oust the president. That happened in 2014.
But, that was illegal.
Under Articles 108-112 of Ukraine’s constitution, there are four ways a sitting president may leave office between elections: resignation, incapacitation, death, and impeachment. None of the first three happened—early rumors to the contrary, Yanukovych has vehemently denied that he resigned—so that leaves the fourth, impeachment. According to Article 111, impeachment must follow a specific set of procedures: Parliament must vote to impeach and then convene a committee to investigate. That committee must investigate and report back to parliament, which must then vote to bring charges. A final vote to convict may only come after receipt of a judgment from the Constitutional Court that “the acts, of which the President of Ukraine is accused, contain elements of treason or other crime."
And this final vote would have taken the votes of at least 3/4 of all MPs (338), whereas only 328 MPs simply voted for impeachment.
