Russia has offered to sell a powerful air-defense system to Iran, a top executive said, five years after the Kremlin canceled the sale of an earlier version under U.S. and Israeli pressure.

Sergei Chemezov, chief executive of the Russian defense conglomerate Rostec, said Tehran was considering its offer to sell Antey-2500 anti-ballistic missile systems. A 2007 contract to supply the less-advanced S-300 system was canceled in 2010.

“They are thinking (about it). The decision hasn’t been taken yet,” Mr. Chemezov told reporters at a weapons exhibition in Abu Dhabi on Monday, the state-controlled news agency TASS reported. […]