In recent years the interpretation of the ad bellum rules has been readjusted so as to permit forcible responses against terrorism under more lenient conditions. Yet the threshold level of provocation that legitimizes a full-scale war in response remains relatively high. This observation is...

The paper analyzes the effect of the generosity of the welfare state on the skill composition of immigrants. We develop a parsimonious model in which the effect of an increase in the generosity (and taxes) of the welfare state on the skill composition of immigrants under free migration is...

Skilled migrants typically contribute to the welfare state more than they draw in benefits from it. The opposite holds for unskilled migrants. This suggests that a host country is likely to boost (respectively, curtail) its welfare system when absorbing high-skill (respectively, low-skill)...

Skilled migrants typically contribute to the welfare state more than they draw in benefits from it. The opposite holds for unskilled migrants. This suggests that a host country is likely to boost (respectively, curtail) its welfare system when absorbing high-skill (respectively, low-skill)...

relative to the free migration regime.