The document further states that Stern believed “it is possible to reach a practical agreement with the Germans … negotiations should be opened, and Jews of Europe should be recruited into a special army that would fight its way to Palestine and conquer it from the British. The Germans, he argued, would agree because it would rid them of the Jews while also removing the British from the Near East.”

I know I shouldn't laugh at the mentally challenged, but reading that was hilarious.

to the surprise of… no-one.

The enemy of my enemy is mein freund für mein kampf. Realpolitik can be a right bugger.

More on these whackjobs (via wikipedia):

In January 1941, Stern attempted to establish an agreement with the German Nazi authorities, offering to "actively take part in the war on Germany's side" in return for German support for Jewish immigration to Palestine and establishing a Jewish state. Another attempt to contact the Germans was made in late 1941, but no German response has been found.

After the assassination, the new Israeli government declared Lehi a terrorist organization, arresting some 200 members and convicting some of the leaders.

Just before the first Israeli elections in January 1949, a general amnesty to Lehi members was granted by the government.

In 1980, Israel instituted a military decoration, an "award for activity in the struggle for the establishment of Israel", the Lehi ribbon.

They reaaaaaally hated the brits (which is admittedly based) but had just the worst takes besides that. The allies with germany thing is possibly being overblown though - from everything I have read it was very much a known attempt to save the lives of the diaspora before the Final Solution was implemented. A bad and spectacularly racist way to approach it, but not one that's completely without understandable motivations given what happened next.

Stern was stupid. When Germany's Afrika Korps was advancing into Egypt, Nazi death squads were preparing to exterminate the Jews in Palestine. However, the Germans were stopped in the Battle of El Alamein.