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- Perimeters (Boundaries) 31
- Politics and government 23
- International regimes 9
- Armed Forces 8
- Agriculture 5
- Dams 5
- Refugees 4
- Watersheds 4
- Demography 3
- Economics 3
- Irrigation 3
- Yarmuk River 3
- Climate 2
- Earthquakes 2
- Groundwater 2
- Human settlements 2
- Hydrology 2
- Negotiation 2
- Occupied territories 2
- Precipitation (Meteorology) 2