PARIS (Reuters) -France’s new foreign minister said on Tuesday there were only a few weeks before the window of opportunity to revive Iran’s 2015 nuclear deal with world powers would close. Speaking to lawmakers, Catherine Colonna said the situation was no longer tenable and accused Iran of using delaying tactics and going back on previously agreed positions during talks in Doha earlier this month, while forging ahead with its uranium enrichment programme. “There is still a window of opportunity…for Iran to finally decide to accept an accord which it worked to build, but time is passing,” Co…