You might want to do a little
You might want to do a little research yourself. It's GM that's breaking the contract. The last Muller/Youngman deal involved 0% Chinese ownership, it was essentially a loan. By contract, Muller was allowed up to 19.9% new ownership without GM approval. GM had no say and no right to terminate the agreement. However, there were just no funds or time for Saab to fight GM in court.