Risks that are associated with an uncertain trading world have been dealt with using two different techniques in the literature: defensive, or insurance approaches, and preventive, or self-protection approaches. Much of the earlier work was emphasized by security issues but with the end of the...

Gravity equations have been used for more than 50 years to estimate ex post the partial effects of trade costs on international trade flows, and the well-known - and traditionally presumed exogenous - "trade-cost elasticity" plays a central role in computing general equilibrium trade-flow and...