The US and Iran continue to shadowbox as diplomacy works in fits and starts, with talks appearing close and then slipping away.
Donald Trump cancelled the envoy visit signalling frustration, while Abbas Araghchi moved between Islamabad, Oman and Moscow, showing the stop-start, uncertain nature of diplomacy.
The impasse remains over irreconcilable red lines, US pressure through blockade and sanctions, and Iran insisting on ending the blockade and refusing to dismantle its nuclear programme.