Les coûts de l’inflation[Inflation costs]

He seems that the literature about the costs ofr inflation remins weak with a lake of empirivcal assessment of this fact. Thus the interest of the following study. Thus in a first time with an convanable measure of Supply Shocks in otherterms of relative prices variability we assess on the cost of inflation. In the second time by taking into accunt the current context of regain in inflation even for countries caractherized with an strong dependency toward abroad we investigate thus the costs of inflation with this pattern that caractherized under developed as well as developed countries as revealing with the contemporaneous ukranian crisis with exhibit the increasing dependancey of Europe around energy furniture coming from Russia like the rest of the world toward food products of these two countries. For this purpose we rely om model of speculative attacks who assess well a relation between the country external assets and inflation.