Central European defence cooperation is an agreement between countries in Central Europe so that they can work together to protect and defend each other. It means they can combine their forces and resources so they can be more powerful and better protect themselves against enemies. For example, if one country is threatened by an enemy, they can call on the help of their neighbouring countries to come to their aid. Central European defence cooperation also means that countries in the region can share equipment, training and intelligence so they can all be better prepared to face any threats.