Tanzania is embroiled in a dispute with Malawi over the boundary in Lake Nyasa (Lake Malawi).

Tanzania's growing role in the transshipment of Southwest and Southeast Asian heroin and South American cocaine destined for European and United States markets and of South Asian methaqualone bound for Southern Africa.

Tanzania's first president, Julius Nyerere also was one of the founding members of the Non-Aligned Movement, and, during the Cold War era, Tanzania played an important role in regional and international organizations, such as the Non-Aligned Movement, the front-line states, the G-77, and the Organization of African Unity (OAU). One of Africa's best-known elder statesmen, Nyerere was personally active in many of these organizations, and served chairman of the OAU (1984-85) and chairman of six front-line states concerned with eliminating apartheid in Southern Africa. Nyerere's death, in October 1999, is still commemorated annually.

Tanzania enjoys good relations with its neighbors in the region and in recent years has been an active participant in efforts to promote the peaceful resolution of disputes. Tanzania is helping to broker peace talks to end conflict in Burundi and supports the Lusaka agreement concerning the conflict in the Democratic Republic of the Congo. In March 1996, Tanzania, Uganda, and Kenya revived discussion of economic and regional cooperation. These talks culminated with the signing of an East African Cooperation Treaty in September 1999, which should in time lead to economic integration. Tanzania is the only country in East Africa which also is a member of the Southern Africa Development Community (SADC).