The primary delegate at the Peace of Westphalia, FTP, identify this most powerful statesman in Swedish history.
In 1633 he organized the Protestant princes of Germany into the League of Heilbronn.  He also negotiated the Treaty of Wismar with France, whereby his nation gained France's aid with no concessions.  He stripped Denmark of its power by negotiating the Peace of Br?msebro after the 1643-45 Danish War.  He lost power after disputes with Queen Christina, though the diet appointed him legate plenipotentiary in Germany after the death of Gustavus Adolphus.  The primary delegate at the Peace of Westphalia, FTP, identify this most powerful statesman in Swedish history.
In 1633 he organized the Protestant princes of Germany into the League of Heilbronn.  
Count Axel Gustafsson Oxenstierna