5783: look at שיחת אחרון של פסח תש״ט to see what was the שיטה of the Rayatz towards the state of Israel in his later years
I’m sorry, I couldn’t find anything in the source that you gave, please be more specific.
P.S. I would like to clarify again that by “change” – I’m referring specifically to the MANNER of opposition, not ch”v a change in ideology.
The Rebbe Rashab (and Rayatz in his early years) fought strongly and publicly to prevent the actual establishment of the “state”.
However, once the state became more of a reality, the manner of public opposition changed by the Rebbe Rayatz and the Rebbe, despite the fact that they continued reject the zionist ideology (as can be found in their sichos).