Yesterday marked the deadline for parties within the government of national unity to resolve their impasse over clauses 4 and 5 of the BELA Act. These clauses concern the authority to determine school language policies and the procedures governing school admissions. The South African Democratic Teachers' Union - SADTU - believes President Cyril Ramaphosa's decision to postpone the implementation of the two contentious sections of the Basic Education Laws Amendment Act  - BELA Act - was purely for political expediency, based solely on the objections of the Basic Education Minister Siviwe Gwarube and her political party, the DA. In a rare show of defiance, the union, an affiliate of the ANC, this week also informed Ramaphosa in a letter that it will legally challenge his decision if he does give the green light for the implementation of the two sections, and also embark on a strike. Jon Gericke spoke to SADTU Media Officer, Nomusa Cembi and analyst, Sandile Swana