Thanks for your question.
This doesn't appear to be freely available on the Internet. However,
you can access it via the Lexis-Nexis database at Dalhousie's Killam
Killam Memorial Library
Typing in Lexis into the link below indicates that while Dalhousie
subscribes to the database, you have to access it in the library's
reference area and you have to be a current student, faculty or staff
member with Dalhousie University.
Since you know the name of the publication: Heritage Foundation
Reports (which is tricky to determine from the citation), I would
search by publication type. Per the instructions linked below, go to
the main search box and click on "more sources." Using the drop-down
boxes, select alphabetical source list and find the h's.
For your terms, I'd just try "expanding united nations."
Instructions on using Lexis-Nexis
"heritage foundation reports" database (found a link mentioning a
connection with Lexis Nexis
Then searched your library's web site
I hope this answers your question. If you need further assistance,
please ask for clarification, and I'll do my best to assist you.