[M T]

https://www.nytimes.com/2022/09/25/world...e-war.html
Any idea of why sending tanks is apparently a red line for Olaf Schulz?

I can't read that article, but other articles have these comments
(source)

Several countries, including Spain, requested German permission to hand their tanks over to Ukraine, but were denied the permits as Berlin continues to struggle with its longstanding policy of refusing to export arms to conflict zones.

(source)

Crucially, Strack-Zimmermann cited the “Zeitenwende” — a historic shift in German foreign and security policy that Scholz announced in February in the wake of Russia’s invasion of Ukraine — to argue that Scholz shouldn’t justify his reluctance to send tanks by arguing that other allies like the U.S. weren’t sending modern tanks to Ukraine either.
... The Greens’ co-leader Omid Nouripour delivered a broadside against concerns among Social Democrats that the delivery of tanks to Ukraine could trigger an “irrational” escalation by Putin — a fear that was most recently expressed by the SPD’s Secretary General Kevin Kühnert.

[M T]

https://www.nytimes.com/2022/09/25/world...e-war.html
Any idea of why sending tanks is apparently a red line for Olaf Schulz?

I can't read that article, but other articles have these comments
(source)

Several countries, including Spain, requested German permission to hand their tanks over to Ukraine, but were denied the permits as Berlin continues to struggle with its longstanding policy of refusing to export arms to conflict zones.

(source)

Crucially, Strack-Zimmermann cited the “Zeitenwende” — a historic shift in German foreign and security policy that Scholz announced in February in the wake of Russia’s invasion of Ukraine — to argue that Scholz shouldn’t justify his reluctance to send tanks by arguing that other allies like the U.S. weren’t sending modern tanks to Ukraine either.
... The Greens’ co-leader Omid Nouripour delivered a broadside against concerns among Social Democrats that the delivery of tanks to Ukraine could trigger an “irrational” escalation by Putin — a fear that was most recently expressed by the SPD’s Secretary General Kevin Kühnert.