The little-known bank singled out by the United States, the Elaf Islamic Bank, is only part of a network of financial institutions and oil-smuggling operations that, according to current and former American and Iraqi government officials and experts on the Iraqi banking sector, has provided Iran with a crucial flow of dollars at a time when sanctions are squeezing its economy.
The Obama administration is not eager for a public showdown with the government of Prime Minister Nuri Kamal al-Maliki over Iran just eight months after the last American troops withdrew from Baghdad.
Still, the administration has held private talks with Iraqi officials to complain about specific instances of financial and logistical ties between the countries, officials say, although they do not regard all trade between them as illegal or, as in the case of smuggling, as something completely new.
