Our best photos from the last 24 hours.
- IBM launches Watson system for research, hopes for breakthroughs
- Comedian Joan Rivers 'resting comfortably' at hospital |
- Separatists say will allow 'trapped' Ukrainian forces to withdraw |
- In town halls, U.S. lawmakers hear voter anger over illegal migrants |
- U.N. says 43 Golan peacekeepers seized by Syria militants, 81 trapped