Board Thread:Naruto Discussions/@comment-24593592-20140817135031/@comment-25272406-20140817140225

2. Tobi just vanished with Kamui, so the bomb is useless 3. konan didn't kill Obito and he wasn't using Izanagi (he would be blind because of using it). Obito was only injured 4. Minato didn't kill Obito 5. It was stated that when you extract the Juubi (ten tails) you don't die. Hagoromo also didn't die 8. When you come back as a ghost you really died before. ^^