A video of five-year-old Afghan amputee Ahmad Sayed Rahman dancing after he received a prosthetic leg has gone viral on social media. The clip recorded at a Red Cross orthopaedic centre in the Afghan capital has gained millions of views. Ahmad lost his leg when he was only eight months old when he was caught up in a battle between government forces and Taliban fighters. Now with his prosthetic leg and can finally walk again... and dance. Little Ahmad is also able to dream again, saying he…