CAPE TOWN, South Africa, Mar 25 (IPS) – The writer is Research Fellow at the UK-based Institute of Development Studies and member of its Food Equity Centre.The situation in Ukraine is first and foremost a humanitarian crisis, and the food security and wellbeing of the people of Ukraine should be our immediate concern. However, because of the dominant roles of Russia and Ukraine in global food, fuel and fertiliser markets, there are also massive knock-on effects for people around the world. This is particularly true for the supply and cost of food. Here are three ways that the invasion of Ukraine leads to potential risks to food security in other countries.