Nevertheless, overall increases in produc- tion are essential because no one approach to address food insecurity will be fully effec- tive, given the inevitability of policy failures, as well as the time lags in the demand and supply dynamics of the food system. It is too risky to assume otherwise. Yield increases in many low-income countries are required today; elsewhere, the goal may not neces- sarily be to increase yields immediately but to develop the potential to respond to future increases in demand. Critically, all responses must be environmentally sustainable. SI should be seen as part of a multipronged strategy to achieving sustainable food secu- rity rather than an all-encompassing solution.