The US government justifies drone strikes as legal and effective measures to defend the homeland. The book "Drones and Targeted Killing" questions both premises.
When Obama says of Cuba that "if you've done the same thing for 50 years and nothing has changed, you should try something different," the same logic should be applied to North Korea.
Conor F. McGovern is a demographer, social insurance wonk and advocate for racial and economic justice working in Washington, DC. Follow him on Twitter at @ConorFMcGovern