The following lists events that happened during 1993 in South Africa. Incumbents State President: F.W. de Klerk. Chief Justice: Michael Corbett. Events March 24 – State President F.W. de Klerk informs Parliament that South Africa constructed six nuclear fission devices that had been dismantled by the end of 1989. April 8 – South Africa and India sign a memorandum of understanding on bilateral air services. 10 – Chris Hani is assassinated by Polish immigrant Janusz Waluś. May 1 – Members of the Azanian People's Liberation Army, armed wing of the Pan Africanist Congress, attack civilians at the Highgate Hotel in East London, killing five. 4 – At their annual meeting in Sweden, Nordic development ministers decide to continue support to the African National Congress. 5 – Nelson Mandela addresses a joint sitting of two houses of the United Kingdom Parliament. 5 – Members of the Azanian People's Liberation Army kill four police officers at Dobsonville, Soweto. An Indian diplomatic Cultural Centre is opened in Johannesburg June 4 – Eleven people are killed in clashes between African National Congress and Inkatha Freedom Party members in Estcourt. 4 – South Africa signs the Convention on Biological Diversity. July 25 – members of the Azanian People's Liberation Army open fire on a congregation inside St James Church in Kenilworth, Cape Town, killing eleven and injuring fifty. August 19 – An RPG is fired at the East London petrol depot, but does not explode and results in a shootout with the South African Police (SAP). 23 – The Motsuenyane Commission finds the African National Congress guilty of abuse in some camps in exile, thereby confirming the findings of the Skweyiya Commission. September 2 – National Peace Day is observed in response to political violence, largely concentrated in black townships, that has claimed thousands of lives. 23 – The United States Senate approves legislation lifting economic sanctions against South Africa. October 18 – Five school children are killed in the Mthatha Massacre when the South African Defence Force opens fire on the house of a member of the Pan Africanist Congress. November 18 – Twenty-one political parties approve a new interim constitution of South Africa. 22 – India re-establishes full diplomatic relations with South Africa. A South African diplomatic mission is opened in New Delhi, India December 7 – The 32-member Transitional Executive Council holds its first meeting in Cape Town, the first meeting of