Ali Nikzad said Washington has miscalculated Iran's military capabilities and national unity amid US pressure on Iran's oil trade.
The recovery in oil flows through the Strait of Hormuz depends on continued U.S. military protection of tankers in the Persian Gulf, a CNBC report says.
Tehran is seeking alternative export routes for its oil as the United States moves to blockade Iran's southern ports, according to Al Jazeera.
Saudi Arabia's crude exports have climbed to their highest point since the conflict with Iran began, even as attacks on regional infrastructure continue.