Women’s and human rights activist, arrested at a demonstration in December, is said to be on hunger strike

Iran has sentenced the Nobel peace prize laureate Narges Mohammadi to more than seven more years in prison after she began a hunger strike, her supporters said Sunday, as Tehran cracks down on all dissent following nationwide protests and the deaths of thousands at the hands of security forces.

The new convictions against Mohammadi come as Iran tries to negotiate with the US over its nuclear programme to avert a military strike threatened by Donald Trump. Iran’s top diplomat said on Sunday that Tehran’s strength came from its ability to “say no to the great powers”, striking a maximalist position just after negotiations in Oman with the US.