ABOUT CNAS WORKING PAPERS:Working Papers are designed to enable CNAS analysts to either engage a broader community-of-interest by disseminating preliminary research findings and policy ideas in advance of a projects final report,or to highlight the work of an ongoing project that has the potential to make an immediate impact on a critical and time-sensitive issue.By:Michael C.Horowitz and Paul ScharreWO RK ING PA PER|MARCH 2015MEANINGFUL HUMAN CONTROL in WEAPON SYSTEMS:A Primer