National government agencies will therefore need to define their role in such system, be it as a facilitator or federator of responses, a complementary actor, an investor or funder, or by assuming a regulatory oversight role. The scope of action is differentiated for the hotspot region, the market directly' impacted (Is1 tier), and the indirectly impacted (2n tier) countries—reflecting the three layers of impacts discussed in Chapter 3. Priority should be given to mitigating agriculture water risks in identified hotspot locations (1), not only for effectiveness and efficiency reasons, but because the more risk mitigation is conducted at this level, the lower impact there will be outside of the hotspot location.