Which preposition to use with nonexecution

of Occurrences 2%

The necessity of discussing the nature of the remedies for the nonexecution of the treaty, the character and spirit in which it was done, are explained in my letter so often referred to, and I pray your excellency to consider the concluding part of it, beginning with the quotation I have last made.

on Occurrences 1%

I am instructed to give as a reason for my departure the nonexecution on the part of His Majesty's Government of the convention of July 4, 1831.

Which preposition to use with  nonexecution