And he noted that Mr. Zarrab had given "credible" and "largely unrefuted" testimony at Mr. Atilla's trial about how the conspirators had been able to "transfer or free up millions upon millions of dollars of Iranian proceeds, primarily from the sale of Iranian oil", in violation of the sanctions.
Prosecutors had sought a sentence of about 20 years for Atilla.
Alsan, who has been indicted for more than a year, remains at large.
"This is the biggest sanction evasion prosecution in the United States that we're aware of, " said Assistant U.S. Attorney Michael Lockard. Top Turkish bankers and politicians helped Iran evade severe economic sanctions imposed by the U.S. The most severe sanctions were lifted after Iran agreed to suspend its nuclear program in a multinational deal that took effect in January 2016.
Atilla was found guilty on January 3 of conspiring to violate U.S. sanctions law. "As of now, apart from my family, I have no other priorities".
Atilla was Halkbank's point person for interacting with US officials who were enforcing the Iranian sanctions during the Obama administration. A jury convicted Atilla of five counts, including conspiracy, but acquitted him of one money-laundering charge.
Atilla's conviction hinged on the testimony of Turkish-Iranian gold trader Reza Zarrab, who was arrested by United States authorities in 2016 after jetting to Florida with his pop-star wife and child on a family holiday to Disney World.
Zarrab, 34, initially pleaded not guilty then decided to make a deal, becoming a U.S. government witness after admitting being involved in the multi-billion-dollar gold-for-oil scheme to subvert USA economic sanctions against Iran.
Under federal sentencing guidelines, Atilla faced life in prison because of the amount involved in the scheme.
The Turkish government has fulminated about Zarrab and Atilla's cases, labeling them an attempted "judicial coup" on Erdogan.
Citing similar cases in which other national banks violated sanctions against Iran, the lawyers noted that none of the directors of those banks were arrested or sentenced but Atilla, who had no connection with the USA, was facing a prison term.
"This is a case about nuclear capability by the world's foremost state sponsor of global terrorism", he said at the sentencing. Berman quickly rejected that, saying it wouldn't be "fair, appropriate or reasonable".
And though Turkish bank and government officials were paid millions in bribes, Berman noted Atilla derived no benefit from the scheme.
Atilla was arrested in NY in March 2017, a year after Zarrab's arrest in Florida.
Turkish government officials vilified the participants in the USA court proceedings, with the state news media labeling Berman, prosecutors and even reporters pawns in an elaborate conspiracy by Islamic preacher Fethullah Gulen, a former Erdogan ally turned state enemy.
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He feels like this is another thing in the wake of him. the problems he causes". The royal family has had a similar situation in the past.