Iranian President Hassan Rouhani said in a speech marking the 42nd anniversary of the revolution that Iran has advanced in the military field and has become the largest power in the region. In turn, Iranian Foreign Minister Mohammad Javad Zarif warned Washington against delaying the return to the nuclear agreement, stressing that his country will expand its nuclear program and reduce its cooperation with the International Atomic Energy Agency if the rest of the parties do not abide by their commitments.