The Trump administration hopes the sweeping sanctions it has imposed on Iran's oil, shipping and banking industries will cripple its economy and force it to negotiate a new nuclear deal.
But analysts point out that while such economic penalties can be persuasive, there are also ways to circumvent them.
"There will always be both overt and covert activities to work around sanctions, to dodge sanctions or evade them," says Dan Wager, a global sanctions expert at the consulting firm LexisNexis Risk Solutions. "That's something that's gone on for a very long time."
Iran endured global sanctions for years until 2016, when an agreement with the U.S. and other world powers gave the country economic relief in exchange for limiting Tehran's nuclear program. President Trump unilaterally pulled out of that multination deal and placed a raft of U.S. sanctions back on Iran.
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