The principle point of contention in the proposed nuclear deal are the sanctions faced by Iran. A couple of sanctions impede Iran's path to a nuclear state like nuclear-related UN resolutions. But there are also EU nuclear-related economic sanctions that need to be done away with for Iran to be happy. While Iran wants an immediate removal of all sanctions imposed on it by the world powers under the proposed nuclear deal between Iran and the six world powers, the US says they are to be removed in a phased manner.
US President Barrack Obama lost the potential to waive several restrictions imposed on Iran under the sanctions when he agreed on the Congress having the final say in the nuclear deal. This way, the Congress has the power to decide on the fate of sanctions operative on Tehran thanks to US legislators.
Iranian President Hassan Rouhani said the discussions in the US do not concern him as they are the internal matters for the US. He said he was not in favour of a confrontation with the world powers on the issue.
The deal with the world powers has not been welcomed by Israel. Israeli Prime Minister Benjamin Netanyahu said the proposed deal is not likely to clip Iran's wings in any manner. Instead, it is likely to give it a better leverage to develop nuclear weapons. Iran has the potential to destroy Israel if it is armed with a nuclear weapon, fears Netanyahu. Inspection of the nuclear capability of Iran by officials from the International Atomic Energy Association is on the cards.