COURTESY BY: https://www.dawn.com/ PARIS: Russia and France on Thursday urged Iran to show restraint after it started producing uranium metal in a new breach of limits laid out in Tehran’s nuclear deal with world powers. The UN’s nuclear watchdog in Vienna reported that Iran has started producing uranium metal in defiance of a 2015 deal with world powers on which ex-US president Donald Trump sensationally reneged in 2018. The move came as Iran warned that time was running out for new US president Joe Biden’s administration to save the agreement…