Seizures, sanctions and criminal charges in latest US crackdown on Iranian oil

"Claire Jungman, chief of staff of New York-based pressure group United Against Nuclear Iran, said the move constitutes a "significant milestone" but urged for stronger enforcement against the tankers enabling Iran's oil trade.

"The Department of Justice's commitment to dismantling Iran's billion-dollar oil smuggling network marks a significant milestone in our ongoing efforts to curb illicit activities that threaten global security and stability," she said."