The WTO is run by its member governments through councils and committees made up of all members. Major decisions are made by consensus of members. The highest authority is the Ministerial Conference which meets every two years. Between conferences, the General Council handles day-to-day work. Three broad councils oversee trade in goods, services, and intellectual property. Subsidiary committees address specific issues. The WTO system is based on principles of non-discrimination, freer trade through negotiation, predictability, fair competition, and encouraging development.