Since 1993, NIRA has published NIRA's World Directory of Think Tanks (NWDTT), which provides a systematic introduction to the world's most prominent and innovative public policy research institutes, or think tanks. NWDTT provides an overview of the organizational structures and research activities of a large number of think tanks, functioning as the "soft infrastructure" for a global think tank network.
"NIRA's World Directory of Think Tanks"" is indispensable. It provides in one location a comprehensive picture of the world's leading research institutes. Its profiles are an invaluable resource for policy makers, the private sector, foundations, academics and all other users of the output from these centers. I heartily endorse this fifth edition and recommend it strongly to all those with an interest in the topic."
- C. Fred Bergsten, Director, Institute for International Economics (IIE), USA
"The pattern of power and influence in today's world is complex, with many kinds of non-state actors operating alongside traditional nations and institutions. Think tanks can inform, advise and support governments: but they also influence and mobilize opinion in other spheres such as the business world, the media and the general population. To be effective, however - just like anyone else - think tanks have to network, cooperate and seek synergy with one another. NIRA's Directory helps them do this, just as it helps build optimal relations between all think tanks and the outside world."
- Alyson J.K. Bailes, Director, Stockholm International Peace Research Institute (SIPRI), Sweden