"Some we cannot rule out are the constant discussions of so-called medical marijuana, marijuana legalization, and the downplaying of marijuana harms so prevalent in today's media."

VOA: special.2010.10.11

Still,Hyun's rejection of the North's explanation is a sign the South does not rule that possibility out.

VOA: standard.2009.09.09

But as analysts Charles Kupchan of the Council on Foreign Relations points out, security and political considerations rule out such an option in Pakistan.

VOA: standard.2009.09.09