Turkey applied to the League to reclaim its sovereignty over the straits in 1936. Turkish government made its case with reference to the principle of rebus sic stantibus that means obligations of treaty are terminable in the case of a fundamental change of circumstances. Turkey claimed that the circumstances of the Lausanne Treaty were altered so much that the provisions of the Lausanne Treaty concerning the status of the straits were no longer applicable. Turkey put forward several key issues that compromised the League’s capability to protect the Straits against a potential aggression.