You can absolutely want peace and even agree to concessions to Russia to reach a sustainable peace, but this point is absolutely valid: there must be security guarantees, otherwise Putin will just use the armistice to rebuild its strength and attack again.

Unlikely, they’re happy with their result.

It’s however possible that the conservatives will run the Austrian playbook. Talks with the social democrats fail, “we have a responsibility to Germany to form a government”, then make a coalition with the AfD (Nazis).

Back to your original question: the BSW will likely contest the elections, as they have missed the 5% threshold by only ~14k votes and there are evident irregularities. For example, many Germans living abroad, for example those living in the US, had almost no chance to cast their vote.

Apparently no-one did it yet, so I’ll name my child +++ATH0