By signing the Litvinov Protocol in Moscow on 9 February 1929, the Soviet Union and its western neighbours, including Romania, agreed to bring the Kellogg Briand Pact into force without waiting for ratification by other Western signatories.  The Bessararian question had made the agreement between Romania and the Soviet Union a challenge and the continuation of the dispute between the nations over Bessarabia.   The extension of the Covenant to other nations has been well received at the international level. After the heavy losses of the First World War, the idea of declaring war illegal was very popular with international public opinion. Because the language of the pact justified the important point that only wars of aggression – not military acts of self-defence – would be covered by the Covenant, many nations had no objection to signing. If the pact were intended to limit conflict, everyone would benefit; not to draw any legal consequences. In early 1928, the negotiations of the agreement were extended to all the first signatories. In the final version of the pact, they agreed on two clauses: the first dense war, as an instrument of national policy, and the second inviting the signatories to settle their differences by peaceful means. The 1928 Kellogg-Briand Pact was concluded outside the League of Nations and remains in force.  One month after its conclusion, a similar agreement, the General Law for the Settlement of International Disputes, was reached in Geneva, requiring its signatory parties to set up conciliation commissions in each disputed case.  The essential provisions of the Covenant, which renounce the use of war and encourage the peaceful settlement of disputes and the use of collective force to prevent aggression, have been incorporated into the Charter of the United Nations and other treaties.
Although civil wars have continued, wars between established states have been rare since 1945, with few exceptions in the Middle East.  The first major test of the pact came a few years later, in 1931, when the Mukden incident led to the Japanese invasion of Manchuria. Although Japan signed the pact, the combination of global depression and the limited desire to go to war to preserve China prevented the League of Nations or the United States from taking steps to impose it. Other threats to the peace agreement were also posed by the signatory countries, Germany, Austria and Italy. It soon became clear that there was no way to enforce the pact or punish those who broke it; he never fully defined what self-defense represented, so there were many paths around his terms. In the end, the Kellogg Briand Pact did little to avoid World War II or any of the ensuing conflicts. His legacy remains a statement of idealism expressed by the proponents of peace in the interwar period. Frank Kellogg was awarded the Nobel Peace Prize in 1929 for his work on the Peace Pact. The Pact not only linked the various nations that signed it, but also served as one of the legal bases established by international standards that the threat or the use of military force in violation of international law and the resulting territorial acquisitions are illegal. Article II The High Contracting Parties agree that the settlement or resolution of any dispute or conflict, whatever their nature or origin, that may occur among them can only be sought by peaceful means. After negotiations, the pact was signed in Paris at the French Ministry of Foreign Affairs by representatives of Australia, Belgium, Canada, Czechoslovakia, France, Germany, the United Kingdom, India, Ireland, Italy, Japan, New Zealand, Poland, South Africa and the United States. It came into force on July 24, 1929.