<span style="color: #222222;">Iran today said it has fired up advanced centrifuges to boost its enriched uranium stockpiles.<br />''<br />''The move could lead to Tehran enriching uranium much faster and gaining the means to build atom bombs.<br />''<br />''Iran's Atomic Energy Organisation said it had activated 20 IR-4 and 20 IR-6 centrifuges as its latest step back in rolling back its commitments.<br />''<br />''Under the 2015 Joint Comprehensive Plan of Action (JCPOA), Iran was allowed to enrich uranium, using only first-generation or IR-1 centrifuges.<br />''<br />''However, the organisation spokesman, Behrouz Kamalvandi said that it would honour commitments to give UN inspectors access to monitor its nuclear sites.<br />''<br />''US Defence Secretary Mark Esper said in Paris that he was not surprised that Iran has announced that it's going to violate the JCPOA.<br />''<br />''The latest move by Iran came after European Union members Britain, France and Germany were unable to find a way to offset the impact of sanctions on the country before a September 7 deadline set by Tehran.</span><br />