The U.S. missile defense policy after 2019 Missile Defense Review: Implementation of a plan or departure from it?

Donald J. Trump administration have not made final decisions regarding missile defense policy yet. Plans continue to change. The article delivers an analysis of how missile defense budget requests on FY 2020 and FY 2021 correlate with 2019 Missile Defense Review priorities. The first section of the article is about U.S. homeland defense policy. Curtailing and cancelling of main homeland defense programs were due to a combination of several factors. Further development of regional missile defense programs towards intercepting intercontinental ballistic missiles gains momentum, though perspectives of such development are unclear. The second section of the article is about regional missile defense policy. There are certain features of quantitative and qualitative development of these systems after 2019 Missile Defense Review release. As part of regional missile defense development certain efforts are devoted to cruise missile defense and hypersonic defense. The third section of the article contain an analysis of policy regarding advanced missile defense projects. The current set of these projects does not correspond with the set proposed in 2019 Missile Defense Review. It is still unclear how soon the new systems will be developed and declared operationally capable. The fourth section of the article is about missile defense funding perspectives. There are several factors which could influence the funding of certain programs and, as a result, either expedite or hold them. These factors should be taken into account during analysis of trends in the U.S. missile defense policy and its influence on global and regional security.