According to a report on the website of the Wall Street Journal of the United States on December 6, problems in the supply chain led to a slowdown in the growth of global arms sales. According to the report, the chaos in the supply chain may break the situation that global arms sales have risen for seven consecutive years. Although Ukraine is fighting fiercely, tensions in some regions are also increasing. According to the Stockholm International Peace Research Institute, the sales of the world's 100 largest defense companies increased by 1.9% last year, reaching $592 billion, slowing down compared with that before the COVID-19 pandemic, with sales growth of European and Asian suppliers as the main. Among the top 10 companies in terms of sales, American companies occupy the top 5. Last year, due to the impact of the shortage of spare parts and labor, some of the largest American companies in the list saw their revenues decline. Many executives expect this challenge to continue until 2023. According to the report, sales have slowed down in the context of demand growth, which highlights the contradictions of the current arms market and indicates that the military production base is facing greater challenges in peacetime. Although Ukraine's allies have invested billions of dollars in Ukraine's existing weapons stockpiles, challenges in workers and supply chains and outdated parts are hindering countries' efforts to replenish their weapons stockpiles. According to the Stockholm International Peace Research Institute, sales of North American defense enterprises fell 0.9% year on year last year. Lockheed Martin, the world's highest sales defense contractor, is busy coping with the challenges of supply chain and labor shortage, and its annual revenue is not expected to grow until 2024. Dr. Diego Lopes da Silva, a senior researcher at the Stockholm International Peace Research Institute, said: "It will take time to increase production. If the supply chain continues to be interrupted, it may take several years for some major weapons manufacturers to meet the new weapons gap brought about by the Ukrainian war." Lockheed Martin and Raytheon Technology Co., Ltd., ranked second, jointly produce the "Javelin" anti tank missiles in large demand, But they expect it will take two years to double the current production of about 400 pieces per month. According to the report, defense companies are seeking more certainty that increasing production now will not lead to overcapacity in the future. At a recent industry conference, Lockheed Martin CEO Jim Tacklett said that ammunition production needs to double in peacetime. Greg Hayes, CEO of Raytheon, said that since the war began in February, Ukraine has consumed the "Javelin" missiles produced in the past five years, as well as the "Stinger" air defense missiles produced in the past 13 years. He recently said at the Reagan National Defense Forum: "The question is, how can we replenish the consumed reserves and provide them again?" In Europe and Asia, the production problem is not so serious. Company executives said that this shows that the local labor market is not so tense, thus helping enterprises in these regions to increase last year's sales by 4.2% and 5.8% respectively. Last year, the sales of Russian military enterprises remained the same as that of previous years, but industry analysts predict that the sales of these enterprises will decline in 2022 due to the export ban and the shortage of electronic components and other parts caused by sanctions. At the same time, in response to the war in Ukraine,