Polish state. At the same time, Hitler also offered Poland additional territory as an enticement, such as the possible annexation of Lithuania, the Memel Territory, Soviet Ukraine and parts of the Czech lands. However, Polish leaders continued to fear for the loss of their independence and a fate like that of Czechoslovakia, which had yielded the Sudetenland to Germany in October 1938, only to be invaded by Germany in March 1939. Some felt that the Danzig question was inextricably tied to the problems in the Polish Corridor and any settlement regarding Danzig would be one step towards the eventual loss of Poland's access to the sea. Hitler's credibility outside Germany was very low after the occupation of Czechoslovakia, though some British and French politicians approved of a peaceful revision of the corridor's borders. In 1939, Nazi Germany made another attempt to renegotiate the status of Danzig; Poland was to retain a permanent right to use the seaport if the route through the Polish Corridor was to be constructed. However, the Polish administration distrusted Hitler and saw the plan as a threat to Polish sovereignty, practically subordinating Poland to the Axis and the Anti-Comintern Bloc while reducing the country to a state of near-servitude as its entire trade would be dependent on Germany. Robert Coulondre, the French ambassador in Berlin in a dispatch to the Foreign Minister Georges Bonnet wrote on 30 April 1939 that Hitler sought: "...a mortgage on Polish foreign policy, while itself retaining complete liberty of action allowing the conclusion of political agreements with other countries. In these circumstances, the new settlement proposed by Germany, which would link the questions of Danzig and of the passage across the Corridor with counterbalancing questions of a political nature, would only serve to aggravate this mortgage and practically subordinate Poland to the Axis and the Anti-Comintern Bloc. Warsaw refused this in order to retain its independence." Hitler used the issue of the status city as pretext for attacking Poland, while explaining during a high-level meeting of German military officials in May 1939 that his real goal is obtaining Lebensraum for Germany, isolating Poles from their Allies in the West and afterwards attacking Poland, thus avoiding the repeat of the Czech situation, where the Western powers became involved.Hitler Joachim C. Fest page 586 Houghton Mifflin Harcourt, 2002A military history of Germany, from the eighteenth century to the present dayMartin Kitchen page 305