RAMALLAH (Reuters) - Palestinian President Mahmoud Abbas on Tuesday accused his Islamist Hamas rivals of carrying out a ****** of bombings against officials loyal to him in Gaza last week, in a move sure to harm already floundering unity efforts. A ****** of small explosions targeted the homes and vehicles of officials from Abbas's Fatah movement on Friday, causing mi**r damage but ** injuries. A bomb also demolished a stage erected to commemorate the 10th anniversary of former president and Fatah leader Yasser Arafat's death, leading to the event being canceled. ...