Nations purchase weapons to defend and advance state interests, but the decision to acquire any major weapon system must also consider the economic impact, for at least two reasons.
Wilson, Dennis B.
"Balancing Efficiency with Equity in Foreign Defense Acquisitions,"
Naval War College Review: Vol. 48
, Article 6.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol48/iss2/6