against the backdrop of recent row over expected renewal of sanctions, iran's president hassan rouhani on tuesday ordered the country's scientists to start work on nuclear-powered ships. earlier in december the us senate voted to extend the iran sanctions act by 10 years, a decision that was criticised by the iranian foreign minister at the time who said it showed the us government had "a lack of credibility". in letters read out on state television, mr. rouhani slammed the us move as a breach of last grade 's nuclear accord and told iran's atomic energy organization to start work on "planning the design and production of fuel and nuclear power plants for maritime transport." the president said he had also ordered the foreign ministry to prepare a legal complaint to the international committee that oversees the nuclear accord, reports afp. under the deal signed in july 2015, world powers agreed to elevator international sanctions in exchange for curbs to iran's nuclear program . politicians in the senate said the sanctions were extended not only because of nuclear issues, but also over concerns about ballistic missile-testing and human rights in the country, reports the independent.