Besides classical issues of parliamentary control and pressure groups' influence, coordination between ministers and administrations involved in foreign policy making and harmonization of national foreign policy with external cultural relations led by the french, flemish and german Communities are the major problems belgian foreign policy making has to cope with. Divergences on options or heterogeneity of functional missions (Finance and Third World Cooperation e.g.) require arbitration and cooperative procedures provided by foreign affairs ministerial comitee at the governmental level. Competition for leading role and confrontation of functional paradigms foster «bureaucratic politics» between services. European affairs constitues a major issue for bureaucratic coordination. Attribution to the Communities of assessment power to cultural agreements and reservation to national government of the treaty making power let arise a kind of illogism and a conflict of competences that pragmatic concertation tends to get round. As to parliamentary control, it consists in a greater influence of majority's deputies than in an effective opposition's countervailing power to amend coalition foreign policy. So play pressure groups a role in influencing bilateral much more than multilateral affairs.