Russia Ukraine war, page-166067

Finally...hooray...sort of.
It was Yanukovych's decision to renege on the agreement which had previously been overwhelmingly approved by the Ukrainian Parliament so it's not correct to say it was the 'Ukrainian Government's' decision. And the catalyst for his decision was pressure brought to bear by Putin.
So now we've travelled this far you now need to explain how that circumstance and situation was 'sponsored by the US' and lead to the 'seizure of power' in terms of your claim.