King & Spalding has signed on to represent Halkbank for the “limited and special purpose” of challenging an Oct. 15 indictment, which accused the Turkish state-run bank of helping Iran evade U.S. economic sanctions.

In a filing late Monday, King & Spalding partner Andrew Hruska said the case raised the “first impression” issue of whether a federal court in Manhattan could exercise personal jurisdiction over Halkbank, a foreign entity with no physical operations in the United States.