THE EDITORS have selected for publication at this time all documents essential to an understanding of the political relations between Nazi Germany and the Soviet Union from the first efforts to reach an agreement in the spring of 1939 to the outbreak of war in June 1941. The larger publication sponsored by the American, British, and French Governments will include additional details, as well as documents which throw light incidentally on RussoGerman relations, but which are concerned with other subjects. The lengthy agreements defining frontiers, and the bulky details of economic relations, have been left to the larger publication. Documents summarizing economic negotiations have, however, been included. Each document has been printed in full, without omissions or alterations.

The translations, except for a few prepared by the editors, were made by the Central Translating Division of the Department of State, and revised by the editors.

The editors have had complete independence in their work and final responsibility for the selection of relevant documents.

RAYMOND JAMES SONTAG

JAMES STUART BEDDIE