[E. Pluribus Unum]

Whatever the characterization of Yanukovych's overthrow, there have been two national elections since...

That's like saying "Whatever the reason for the murder, there have been two national elections since..."

[Petrosius]

Non sequitur. We disagree about the nature of Yanukovych’s overthrow. But that disagreement does not change the fact that there have been two national elections afterwards. So even if I were accept your premise that Yanukovych’s overthrow was an illegal coup, it has no bearing on the legitimacy of the present government.