Qatari PM holds Tehran talks

DUBAI: The prime minister of Qatar visited Tehran on Thursday in a bid to revive diplomatic channels, as the US and Iran traded recriminations over Washingtons latest sanctions drive, described by one Iranian official as all-out economic war. Qatar has served as a back-channel negotiator for the warring parties and played a direct role in securing a June ceasefire that briefly led to a cessation of hostilities. Qatari PM Sheikh Mohammed bin Abdulrahman Al Thani, who is also his countrys foreign…