Databases, listed on the right, will lead you to peer-reviewed journals appropriate for academic research. Please note that articles published in peer-reviewed journals are reviewed by experts and rigorously vetted before publication. Non-peer reviewed journals (also known as popular sources), such as the ones found on magazine racks of large booksellers or published on Google, are not peer-reviewed.
You can also use multisubject databases:
Cold War HistoryUse 
to check the Library's holdings for the journal you want. It is possible that the article you want is not available in a database, but is available in print. Print holdings of journals can be found on the Library's lower level. These are shelved alphabetically according to title.