Navalny to be flown to Berlin after suspected poisoning

After initially saying no, Russian doctors are now letting opposition leader Alexei Navalny, who remains in a coma, to be flown to Germany for treatment. And as Crystal Goomansingh explains, doctors are also changing their explanation on what caused Navalny to become ill.

• Putin critic Alexei Navalny can be flown to Germany after alleged poisoning