I have asked this type of question many a time but nobody seems to have a good explanation "why" exactly. I wanna know the conditions when one uses the definite or the indefinite article in these constructions,
When should I use a+noun+of and when the+noun+of?
1a) Preparations are underway at the airport for a resumption of flights from May 20.
or
1b) Preparations are underway at the airport for the resumption of flights from May 20.
2a) I have been under the threat of death for over a year.
or
2b) I have been under a threat of death for over a year.
3a) Does the stranger pose a threat of death to you?
or
3b) Does the stranger pose the threat of death to you?