Iran gains ground as dominant power in Afghanistan as U.S. presence wanes

There is no doubt that as the United States winds down the Afghan war — the longest in American history, and one that has cost half a trillion dollars and more than 150,000 lives on all sides — regional adversaries are muscling in.

Saudi Arabia and Pakistan remain the dominant players. But Iran is also making a bold gambit to shape Afghanistan in its favor.

Over the past decade and a half, the United States has taken out Iran’s chief enemies on two of its borders, the Taliban government in Afghanistan and Saddam Hussein in Iraq. Iran has used that to its advantage, working quietly and relentlessly to spread its influence.

In Iraq, it has exploited a chaotic civil war and the American withdrawal to create a virtual satellite state. In Afghanistan, Iran aims to make sure that foreign forces leave eventually, and that any government that prevails will at least not threaten its interests, and at best be friendly or aligned with them.

One way to do that, Afghans said, is for Iran to aid its onetime enemies, the Taliban, to ensure a loyal proxy and also to keep the country destabilized, without tipping it over. That is especially true along their shared border of more than 500 miles.

But fielding an insurgent force to seize control of a province shows a significant — and risky — escalation in Iran’s effort.

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Iran has conducted an intensifying covert intervention, much of which is only now coming to light. It is providing local Taliban insurgents with weapons, money and training. It has offered Taliban commanders sanctuary and fuel for their trucks. It has padded Taliban ranks by recruiting among Afghan Sunni refugees in Iran, according to Afghan and Western officials.

“The regional politics have changed,” said Mohammed Arif Shah Jehan, a senior intelligence official who recently took over as the governor of Farah Province. “The strongest Taliban here are Iranian Taliban.”