The Syrian army has also boosted its presence along the previously unpatrolled Lebanese border, to stem the movement of people and weapons from loosely-policed Lebanon.

ECONOMIST: Syria and Lebanon

Britain, whose troops are facing the rebel movement in Sierra Leone, is particularly keen to stem the trade from that country, where at present the government controls not a single diamond.

ECONOMIST: How to stop diamonds paying for nasty African wars

The rationale for pursuing stem cell therapy in autism is based on encouraging results of unpublished data examining stem cell therapy in children with cerebral palsy, a group of disorders that affect not only movement, but learning, behavior and cognition.

FORBES: Stem Cell Therapy To Treat Autism?