The study is not particularly good, but you might want to scan it.  Very limited recognition of the cross currents in Europe and the impact of small yield weapons.  His solution to strengthening extended deterrence is to put nuclear weapons into Poland.

For those who have been familiar with CSBA, it looks as if this represents the direction of new leadership there.  Andrew Krepinevich is no longer in charge but is now identified as a Distinguished Senior Fellow.  CSBA was one of the few think tanks in the US that did good military analysis.  You will see this study is political science stuff without any military analysis.



Extended Deterrence in the Second Nuclear Age: Geopolitics, Proliferation, and the Future of U.S. Security Commitments
By, Dr. Evan B. Montgomery

 


The Center for Strategic and Budgetary Assessments (CSBA) is pleased to announce the publication of Extended Deterrence in the Second Nuclear Age: Geopolitics, Proliferation, and the Future of U.S. Security Commitments. Authored by Dr. Evan Montgomery (CSBA Senior Fellow), this monograph provides an overview of U.S. extended nuclear deterrence commitments and how Washington plans to uphold them; describes the main challenges to extended nuclear deterrence in Europe, East Asia, and the Middle East; and sketches out what updated extended nuclear deterrence postures might look like across all three regions in the future.
 
A copy of the report can be downloaded from CSBA's web site.  Additionally, on the same page you can watch a video of a panel discussion highlighting regional perspectives of deterrence. The panel was moderated by Ambassador Eric Edelman and included Dr. Evan Montgomery, Dr. Jakub Grygiel of the Paul H. Nitze School of Advanced International Studies, Dan Blumenthal of the American Enterprise Institute, and Michael Eisenstadt of the Washington Institute for Near East Policy.