Dhaka, July 17 -- France, the United Kingdom and Germany will reinstate harsh sanctions on Iran by the end of August if no progress is made on a nuclear deal, Western diplomats and officials say.

The economic penalties on Iran that were lifted under a 2015 agreement in return for allowing restrictions and monitoring of its nuclear programme would return by the end of next month "at the latest" if there is no breakthrough, French Foreign Minister Jean-Noel Barrot told reporters in Brussels on Tuesday.

The deadline was announced as pressure mounts on diplomats to find a new solution to Iran's nuclear ambitions, which Tehran has reiterated are civilian in nature, in the wake of massive Israeli and United States strikes on the country last mo...