The world monetary and financial system (WMFS) plays a key role in servicing trade and investment activities and transactions between the subjects of the global economy. In recent decades, the participants of international economic relations are facing increasing problems of access to international liquidity. The purpose of the article is to identify the fundamental reasons for the crisis of the modern WMFS. A hypothesis has been put forward regarding the differences between the US and theUK in terms of approaches to reforming the WMFS. From the standpoint of Keynesian theory, it is shown why the current institutional format of the Jamaican monetary system does not allow bringing the world economy to the trajectory of a balanced, confident ...