You can't keep global empire a secret ~ by necessity you need people to believe in your cause ~ even if you dress it up and spin it as something other than naked conquest.
It works in layers ~ papers like "Which Path to Persia?" being toward the top are aimed at people who believe in global governance and globalization ~ professors, senior editors, CEOs etc. who falsely believe they have a stake in the process ~ and while it is made public, it is generally inaccessible to the average reader because of its use of academic English, length, and very high minimal requirements in understanding the history, strategy, geopolitics, and human nature necessary to understand the contents.
On Brookings own website you will also see their policy makers pen articles & op-eds for newspapers, sufficiently dumbed-down, in plainer English, and with noticeably more spin in place of the straight-forward frankness of pieces like "Which Path to Persia?" Consider Kenneth Pollack, co-author of "Which Path to Persia?" then penning this fluff piece, "Iran's Covert War Against the US" for the Daily Beast.
Below that is your corporate-media propaganda which is almost entirely useless and also the most widely viewed by the greatest number of people. Those that believe anything they see on CNN or Fox are generally unaware that organizations like Brookings even exist - despite their "experts" often being brought on for commentary & analysis.
As much as the alternative media has grown, a tremendous amount of ordinary people have still never heard of PNAC, Agenda 21, Brookings (let alone any specific work of theirs) and so on.
I am acutely aware of a possible strategy of tension created by dictating the tempo & nature of global conflict by publicly releasing apparent intentions ~ then again the global elite of Wall Street and London really are subverting governments with US/UK funded NGOs and there is a paper trail overtly, publicly proving it.
Of course, the only thing we can ever be sure of is ourselves, our family and friends, and people in our immediate community. That is why facing the vast landscape of geopolitics and a means of implementing change across it is better off being started in your own backyard, on your own block, and in your own community.