Topic
- Investments, Foreign 42
- Water consumption 41
- Debt 36
- Sewage 36
- United States. Agency for International Development 34
- International regimes 29
- Foreign relations 28
- Resource allocation 27
- Armed Forces 26
- Canals 26
- Pipelines 23
- Labor 22
- Watersheds 21
- Drinking water 20
- Saline water conversion 20
- Exports 19
- Population 19
- Contamination of environment 18
- Drainage 18
- Political parties 18