In 1929, he's exiled to Turkey. Stalinists purge more than just Left Opposition. By 1930, the Communist International and affiliated parties are merely bureaucratic extensions of Soviet foreign policy. The leaders of the KPD are appointees of the Kremlin. Meanwhile, the Comintern adopts the ultra-left doctrine of the Third Period and something called social fascism .
Capitalist crises return and proles are ready to rise up again.
The Great Depression, death knell of Weimar. German unemployment hits 3 million. The already fragile German economy collapses. The populace is radicalized. KPD membership grows, despite alienation from SPD -led unions.