Proposed changes would extend presidential terms from five to seven years.
President Emmerson Mnangagwa could remain in office until 2030.
Biti's detention highlights tensions surrounding the proposed amendments.
Strategic angle: Proposed constitutional changes could extend presidential terms, raising concerns over political stability.
Proposed changes would extend presidential terms from five to seven years.
President Emmerson Mnangagwa could remain in office until 2030.
Biti's detention highlights tensions surrounding the proposed amendments.