The phrase "fail to be aware" is a correct and usable phrase in written English.
You can use it to describe a situation where someone doesn't notice something or doesn't take something into consideration. For example, "He failed to be aware of the consequences of his actions."
No Iranian leader could fail to be aware of this situation.
However, he did have an undoubted charisma: you couldn't fail to be aware that you were in the presence of a force of nature.
But no performer who had been through the extreme addictions and depression that Williams had (and about which he was candid in his standup routines and interviews) could fail to be aware of his own capacity for darkness.
This strongly-held opinion, of which the Americans could not fail to be aware, was exactly what Barack Obama and General Stanley McChrystal, Nato's commander, did not want to hear.
Regular visitors to Belarus cannot fail to be aware of the many health problems which, even today, seem to be more acute in the contaminated parts of the country.
Different alters within one body can fail to be aware of each other, but there can be interaction between them.
The misconduct in the case, the judge added, showed a serious disregard for customers of the bank, which was aware "or recklessly failed to be aware" of the conduct at issue.
In the last few weeks you can't have failed to be aware of Will Smith's pint-sized 12-year-old son Jaden; he's been unleashed at film premieres from Beijing to Berlin.
When Mr Coleman asked how he could have failed to be aware of Mr Zureikat's oil deals, Mr Galloway turned the attention to Mr Coleman's campaign fundraising.
The Confuser, an inner self who makes arbitrary inferences, fails to be aware of the full picture, overgeneralizes, and makes other cognitive distortions?
One might also respond that even if one is acquainted with one's being appeared to 48-speckledly, one might fail either to have the right sort of thought or fail to be directly aware of a correspondence relation holding between this fact and the corresponding thought.
