An Iranian Foreign Ministry official has said following the outbreak of border clashes between Iranian border guards and Taliban fighters that any conflict between the two countries is detrimental to both of them.
The May 28 comments on Twitter by Seyyed Rasool Musavi, director of the Iranian Foreign Ministry's South Asia Department, came a day after deadly gunfire was exchanged along the countries' mutual border.
Abdul Nafee Takour, spokesman for the Taliban-led government's Interior Ministry, told RFE/RL's Radio Azadi that one Taliban fighter and one Iranian border guard were killed in the incident.
Iran's official IRNA news agency has said two border guards were killed and two civilians injured.
Each side has accused the other of shooting first.
Tensions over water rights have risen between Iran and Afghanistan in recent weeks. Drought-stricken southeastern Iran is heavily dependent on upriver water flows from Afghanistan, leading to calls for Afghanistan to release more water and accusations that Kabul is not honoring a bilateral water treaty signed in 1973.
The Taliban has denied it is in violation of the agreement, and said low water levels on the Helmand River -- which feeds lakes and wetlands in Iran's southeastern Sistan-Baluchistan Province -- preclude releasing more water.
Iranian Foreign Minister Hossein Amir-Abdollahian earlier this month demanded in a call with his Taliban counterpart, Amir Khan Muttaqi, that Afghan authorities open the gates of the inland Kajaki Dam on the Helmand River "so both the people of Afghanistan and Iran can be hydrated."
During a visit to Sistan-Baluchistan on May 18, Iranian President Ebrahim Raisi warned "the rulers of Afghanistan to immediately give the people of Sistan-Baluchistan their water rights," adding that the Taliban should take his words "seriously."
The region is one of the most arid areas of Iran, which has seen multiple public protests over water scarcity in recent years.
Shortly after Raisi's comment, Taliban officials announced the construction of a new dam on the Farah River, which feeds agricultural land in southwestern Afghanistan and also drains into southeastern Iran.
In 2021, prior to the Taliban's seizure of power, Afghanistan completed work on the Kamal Khan Dam, which also sits on the Helmand River.