Zeinab Badawi speaks to Rafael Grossi, director general of the International Atomic Energy Agency, amid concern about renewed tensions over Iran’s nuclear programme. Tehran insists that it is only developing nuclear power for civilian purposes, but now Israel has warned that it crosses all 'red lines' and that it won’t allow Iran to acquire nuclear weapons. This follows warnings by Washington and the EU that Iran must allow international weapons inspectors full access to its workshops. Has the IAEA’s inspection programme failed and dashed all hopes of a diplomatic solution to this crisis?