This picture taken on September 22, 2018 shows an Iranian soldier seated in the turret of a tank passing by a large poster of the country's Supreme Leader Ayatollah Ali Khamenei during annual military parade in the capital Tehran.(STR/AFP photo)

TEHRAN, Oct. 4 (Xinhua) -- Iran's Supreme Leader Ayatollah Ali Khamenei said Thursday that Iran will defeat the United States in its economic sanctions against the country.

"Iran's national economy is stronger than U.S. sanctions," Khamenei said in an address to Basij (volunteer) forces in Tehran.

"National economy will defeat the economic sanctions," he said, adding that this will be another "slap on the face of the United States."

He called for the unity among all the Iranians in the face of the "enemy's plots," saying that "if the enemy witnesses the unity, power and determination, it will retreat."

Khamenei said over the past 40 years, when the Islamic republic was established in Iran, the United States have sought to overthrow the Islamic establishment, stressing that Washington will also be disappointed in its recent plots against Tehran.

U.S. Secretary of State Mike Pompeo has said that the United States was terminating the 1955 Treaty of Amity with Iran, after the UN's top court ruled that Washington lift sanctions on Tehran.

The Hague-based International Court of Justice (ICJ) issued a verdict against the U.S. unilateral sanctions, following U.S. withdrawal from the 2015 Iran nuclear deal.

The treaty once helped establish economic relations and consular rights between the United States and Iran.