Iran has not sufficiently implemented commitments to more transparency regarding its nuclear program, the head of the International Atomic Energy Agency (IAEA), Rafael Grossi, said in Vienna on June 5. In March, Grossi and the leadership in Tehran had agreed on increased surveillance of nuclear facilities and investigations into formerly secret nuclear sites. Since then only "a fraction of what we envisaged" has been implemented, Grossi said during an IAEA board meeting. The IAEA chief conceded that some surveillance cameras and devices had been installed. "Some progress has been made, but not as much as I had hoped," he said.