The head of the United Nations' nuclear watchdog warned on Tuesday that Iran is "not entirely transparent" regarding its atomic program, particularly after an official who once led Tehran's program announced the Islamic Republic has all the pieces for a weapon "in our hands".

Speaking at the World Governments Summit in Dubai, just across the Persian Gulf, Rafael Mariano Grossi, the director-general of the International Atomic Energy Agency, alluded to remarks made this weekend by Ali Akbar Salehi. Grossi noted "an accumulation of complexities" in the wider Middle East amid Israel's war against Hamas in the Gaza Strip.