By Siavosh Ghazi
A year after its nuclear deal took effect, Iran is increasingly concerned over the arrival of US President-elect Donald Trump, who has threatened to tear up the historic accord.
Analysts say it is unlikely the Trump administration will completely dismantle the agreement, which he described as "the worst deal ever negotiated".
A series of cabinet appointments, however, have signalled Trump is likely to take a hard line on Tehran.
And that will ratchet up pressure on Iran's President Hassan Rouhani, who is making the nuclear deal a centrepiece of his re-election bid this year.
"Some of the people who are taking office in the executive branch have a long history of being against Iran," said Foad Izadi, a professor of international studies at Tehran University.
"We are going to see a harsher policy toward Iran during the Trump administration," he said.
On Sunday, Iran's top negotiator in the nuclear talks accused Washington of doing "whatever it can to slow down Iran's progress" after the deal.
"In the last 12 months, we have witnessed delays and the disrespecting of promises by the US and some countries. Their hostility increases by the day," Deputy Foreign Minister Abbas Araghchi told reporters.
In confirmation hearings ahead of Trump's January 20 inauguration, several of his cabinet nominees made clear their opposition to a further softening of ties with Tehran.
Secretary of state nominee Rex Tillerson said he would recommend a "full review" of the nuclear agreement.
Read the full story at SpaceDaily