"Republican leaders in the Senate said they would push ahead this month with legislation that allows Congress to approve or reject any final deal — a bill that Mr Obama has threatened to veto because the White House fears it could undermine the negotiations. The agreement was immediately criticised by Israeli officials and is also unlikely to reassure many of the US allies in the Gulf who fear that a nuclear agreement will embolden Iran to flex its muscles in the region."
"Moreover, several important gaps remain in the talks that could complicate reaching a final agreement. The pace and process for unwinding many of the nuclear sanctions that Iran faces remains unclear in the event of a final deal, while there are also questions about how quickly restrictions on Iranian enrichment of uranium will be relaxed after the first ten years of a deal. The agreement also did not resolve issues surrounding Iran’s past research into military dimensions of their nuclear programme."