National Socialist Germany wishes for peace because it recognises the simple fact that no war would be likely to substantially to ameliorate the state of distress in Europe. The distress would probably be made the greater thereby. If only the leaders and rulers had wanted peace, the people would never have wished for war.
Weaker currencies abroad mean a strong dollar, and a stronger dollar, together with a weak global environment, is a drag on the U. S. economy. So it's important, as it affects overall levels of production and employment in the U. S. There are many domestic industries doing well in the United States, notwithstanding a strong dollar.