CNN's Hala Gorani speaks to former Navy SEAL Cade Courtley about what goes into the planning of counter-terror raids.

Watch: What went wrong with Somali terror raid?

She also asks him about the danger involved when 'boots are on the ground' and what happens when an operation goes horribly wrong.

So far, the most practical method of preventing malaria is mosquito nets. That might all change with the introduction of a new vaccine which, if approved, could be the single biggest medical advance in malaria treatment in history.

Hala Gorani speaks with GlaxoSmithKline's Dr. Moncef Slaoui about the new malaria vaccine which could be available in the next couple of years.