The library IS a good starting point.
Repeat after me:
No need to Google it.
Let's practice converting a "keyword search" into a search using the "controlled vocabulary" of Library of Congress Subject Headings.
Is "multilateralism" a Library of Congress Subject Heading? Is it the best (or only) subject your research needs? What happens when you add your country of interest to a search (I'm a fan of "Advanced Search")
What are some subject headings that resonate with you?
The Economist: The World in Brief
Foreign Policy magazine. I’d select Publisher 1970 - latest: publisher Available from 1970 volume: 1 issue: 1.
World Politics Review (Note two databases and selective content only).