After this reconciliation with the Versailles powers, Stresemann moved to allay the growing suspicion of the Soviet Union. He said to Nikolay Krestinsky in June 1925, as recorded in his diary: "I had said I would not come to conclude a treaty with Russia so long as our political situation in the other direction was not cleared up, as I wanted to answer the question whether we had a treaty with Russia in the negative". The Treaty of Berlin signed in April 1926 reaffirmed and strengthened the Rapallo Treaty of 1922. In September 1926, Germany was admitted to the League of Nations as permanent member of the Security Council. This was a sign that Germany was quickly becoming a "normal" state and assured the Soviet Union of Germany's sincerity in the Treaty of Berlin. Stresemann wrote to the Crown Prince: "All the questions which to-day preoccupy the German people can be transformed into as many vexations for the Entente by a skilful orator before the League of Nations". As Germany now had a veto on League resolutions, she could gain concessions from other countries on modifications on the Polish border or Anschluss with Austria, as other countries needed her vote. Germany could now act as "the spokesman of the whole German cultural community" and thereby provoke the German minorities in Czechoslovakia and Poland.