Trade plays a sizeable role in global food supplies. More than 1 billion people relied on international food trade in the early 21st century . Domestic and international trade flows can be dramatically affected by climate change impacts  . Since the impacts of climate change will not be uniform, profitable locations for exports production will change. In addition, the effects of increasing local weather variability caused by climate change means increasing variability of food availability for domestic use and international trade. Finally, extreme events driven by climate change can disrupt transportation along the food value chain. Countries more at risk of natural hazards that disrupt transportation and distribution, and with less extensive routes, are more vulnerable to climate change impacts. A global multi-hazard risk assessment  suggests surface and river flooding, which are projected to increase in a warmer climate, are the main hazards for road and railway infrastructure, increasingly disrupting international and domestic transportation of agricultural commodities.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report