[Rashi says that the oath “not to force the end” prohibits excessive prayer. In Siman 24 the Rebbe asked how much is too much. In this siman he brings two places where the Yismach Moshe discusses this.

I was re-reading your old letters to me and looked into the white paper of 1939, however it doesnt seem to rescind the balfour declaration completely, it just seems to propose a state run by both the arabs and the jews, its more of a modification.