By Nidal al-Mughrabi, Fadi Shana and Ari Rabinovitch DOHA/GAZA/JERUSALEM (Reuters) – Hamas appeared to show the dead bodies of two Israeli hostages on Monday after warning Israel they might be killed if it did not stop its bombardment of Gaza. A new video released by the Palestinian militant group purportedly showed the bodies of Yossi Sharabi, 53, and Itai Svirsky, 38, who had appeared in an initial video on Sunday. It also showed a third Israeli hostage, university student Noa Argamani, 26, seemingly reading a script in front of a blank white wall, saying the two were killed by Israeli strik…