But private-sector interest is not the only factor that will determine the vehicle’s success. Europe has made certain expectations for Iran clear as well. The three countries behind INSTEX took the occasion of the vehicle’s announcement to strongly urge Tehran’s compliance with long-demanded reforms to Tehran’s money-laundering and anti-terrorism financing frameworks. The Rouhani government has encountered major internal opposition to these reforms. But without them Iran risks making itself a financial pariah. And without further badly needed measures to address other economic problems, from a troubled banking sector to sputtering currency policies, even a successful INSTEX will at best be a balm to a system that requires major surgery.
Finally, Washington’s response to INSTEX may also help determine its ultimate efficacy. The vehicle is a fairly modest one, and it is well insulated, but the Trump administration may yet try to stymie its operation. The mechanism is intended to be transparent so that participating companies and governments can pool knowledge and experiences. But that is a double-edged sword, a senior European Union official told us, because if the United States decided to sabotage INSTEX, it would know exactly whom to penalize. Washington might move against the vehicle if it suspects that INSTEX is shielding non-exempt goods, or that countries outside the European Union are participating in it. Such developments would both undercut the economic element of U.S. Iran policy and more broadly threaten American financial primacy.
Put another way, INSTEX risks causing Iranian disappointment if it fails and American anger if it succeeds. But the effort to set it up and the wider consensus on supporting the JCPOA are significant. As tensions between Tehran and Washington continue to rise, Europe’s intervention may help defer the renewal of a nuclear crisis that would dramatically escalate the stakes.