Iran has officially started construction of a second Russia-supplied nuclear power plant at the Bushehr nuclear station on the Persian Gulf coast.The Atomic Energy Organisation of Iran said on Sunday a ceremony had been held to mark the pouring if first concrete for the Bushehr-2 VVER-1000 plant.Ali Akbar Salehi, head of the AEOI, and deputy chief of Russia’s state nuclear corporation Rosatom, Alexander Lokshin, launched construction at the ceremony where concrete was poured for the reactor base.The AEOI also confirmed it had “long-term” plans to build a third Russian plant at the site, about 750 km south of Teheran.