Tribute to Arizona shooting victims
Obama addresses thousands of people packed into a Tucson memorial service for victims of the January 8 shootings, including U.S. Rep. Gabrielle Giffords.
- Comedian Joan Rivers 'resting comfortably' at hospital |
- IBM launches Watson system for research, hopes for breakthroughs
- In town halls, U.S. lawmakers hear voter anger over illegal migrants |
- Separatists say will allow 'trapped' Ukrainian forces to withdraw |
- Obama says does not yet have broad strategy for Islamic State