Possible Clues:

• Assn. like Oxfam or Doctors Without Borders
• Heifer International, for one: Abbr
• The Children's Defense Fund, e.g., in brief
• Amnesty International, e.g., in brief
• Greenpeace or the W.W.F., for short
• Intl. Red Cross, for instance
• Doctors Without Borders or Habitat for Humanity, e.g
• Greenpeace, for one, in brief
• Doctors Without Borders, for one: Abbr
• Charitable group such as CARE International (Abbr.)