It is hard to avoid the conclusion that reducing animal suffering is not the activists' main concern.

ECONOMIST: Animal rights extremists

It's a long shot, but any success in treating stroke would have immense value in reducing human suffering.

FORBES: Repairing The Brain

"The international community can claim full ownership of this treaty, which will make trade in conventional arms more responsible and transparent, thus reducing human suffering and tangibly contributing to international peace, security and stability, " Catherine Ashton, the European Union's foreign policy chief, said in a written statement.

CNN: U.N. approves arms trade pact