The UK and international allies want to see a change in the approach that Iran takes to issues like Syria and Yemen, and to terrorism in the region, prime minister David Cameron told NBC's Meet The Press, Bolton News reported.
"And we want the change in behaviour that should follow from that change", he said during telephone conversation with Iranian president Hassan Rouhani.
"But actually taking the nuclear weapon issue off the table, that is a success for America and Britain and our allies. And we should be clear about that", Cameron added.