Iran's Deputy Ambassador to the United Nations Gholam Hossein Dehqani made the remarks on Tuesday in a session of the United Nations General Assembly's Third Committee.
"The Islamic Republic of Iran has been playing an important role in countering drugs smuggling from its eastern borders with Afghanistan, the world’s largest opium producer,” Dehqani asserted.
He pointed to the casualties that Iran has suffered during its campaign on drugs, adding that the country spends millions of dollars annually to control its borders and build barriers along the border with Pakistan and Afghanistan to prevent drugs smuggling.
Iran has been cooperating with Afghanistan and Pakistan to counter drugs smuggled via sea routes, Dehqani said, adding that the Islamic Republic has confiscated more than 7.5 tons of illicit drugs through exchanging intelligence with its neighbors.
The country shares a long border with Afghanistan which supplies about 90 percent of the world's opium.
Over the past three decades, Iran has spent billions of dollars to seal its borders and prevent the transit of narcotics destined for European, Arab and Central Asian countries.
The war on drug trade, a profitable business originating in Afghanistan, has also claimed the lives of nearly 4,000 Iranian police officers and soldiers.