In consequence of Czech aggressiveness, the German parties (the German Progressists, the German Populists, the Constitutional Landed Proprietors and the Christian Socialists, created a joint executive committee and a supreme committee of four members to watch over German racial interests.
During 1920 and 1921 it was Poincare's influence that was mainly dictating the aggressiveness of French feeling in international politics; and during the latter part of Briand's premiership, culminating in Briand's visit to the United States for the Washington Conference at the end of 1921, it was Poincare who was fomenting the criticism that French interests were being undermined.
Jackson was very successful in collecting old claims against various European nations for spoliations inflicted under Napoleon's continental system, especially the French spoliation claims, with reference to which he acted with aggressiveness and firmness.
On his arrival in Sweden, however, he tried to gain time by provisionally confirming what had been done; but the aggressiveness of the Protestant faction and the persistent usurpations of Duke Charles (the Riksdag of 1595 proclaimed him regent though the king had previously refused him that office) made a civil war inevitable.
His principal difficulties were due to the aggressiveness of Muscovy and the disloyalty of Prussia.