failure to fulfill the obligation

"Albany's failure to fulfill the obligations of the C.F.E. lawsuit should not impact our school children," the mayor said.

That due diligence "ought to be exercised by neutral governments in exact proportion to the risks to which either of the belligerents may be exposed, from a failure to fulfill the obligations of neutrality on their part."

Mackensen's success was favoured by the Allies' failure to fulfill the obligation they had assumed through the military convention, by virtue of which they had to mount an offensive on the Macedonian front, and the conditions in which the Russians deployed insufficient troops on the battlefront in the south-east of Romania.