"The Jews were seen as the most immediate threat to racial purity inside Germany, and as the main motor of resistance outside the country. A policy of extreme anti-Semitism would accordingly be a central concern of the government in peace first and in war later. Furthermore, a key internal need was the urgency of increasing the birthrate of the allegedly better and reducing the birthrate of the supposedly inferior racial stocks within the German population, measures that required a dictatorial regime, which alone could in addition prepare for, and hope to succeed in, the wars a racial policy called for in external affairs. Measured by the criterion of feeding a growing German population with the products of its own agricultural land, the boundaries Germany had once had were almost as useless as those of the 1920s; and thus a revision of the Versailles Peace Treaty of 1919 could be only a propaganda excuse and never a goal of German policy. The vast reaches of additional land to be obtained would never be granted peacefully, and war was therefore both necessary and inevitable."