Commonality of interests, supplementing talents and knowledge, working toward a common goal, a high emphasis on research ethics and sharing of information promptly.
Eastwood et al (2005) have a list of components for successful international health links (see Table 1 in the attached paper). These would be quite applicable to international research collaboration.
Article Analysis of an international collaboration for capacity buil...
You need motivation and incentives to do it. For example, you need specific programs and rules in order to engage in such cooperation. And also you need National Science and Technology Systems and the National Higher Education Systems to provide recognition and incentives for participation.
Scientists have difficult careers. If they do not get credit for some activity or action in a way that helps them advance their careers, it is highly unlikely that they will engage in it for long.
One exception is cooperation to solve scientific issues or problems (sustainable development, environmental, social) which might be meaningful for the scientists themselves at a personal level.
Comunicare stiintifica si cooperare pentru dezvoltare.
Valorizarea oamenilor de stiinta, motivarea acestora si pretuirea competentei si a performantei.
Politici guvernamentale care sa incurajeze si sa stimuleze oamenii de stiinta, cercetatorii si oamenii care aduc plus valoare in domeniul in care activeaza.
considero que lo mas relevante se encuentra en la priorizacion de temas de investigacion, que puedan solucionar y aportar del bienestar general de la poblacion