Iran received the last installment of the $4.2 billion in frozen assets it was promised under the interim nuclear deal signed in November 2013.  In return, Iran either converted or diluted its stockpile of 20 percent enriched uranium.  The $4.2 billion in frozen assets were released in eight installments.  The most recent tranche was paid by India and received by the Central Bank of Iran through the Central Bank of the United Arab Emirates.