U.S. President Donald Trump on Friday called Qatari Emir Sheikh Tamim bin Hamad Al Thani to discuss efforts to end the US-Iran war, amid a diplomatic push to avoid a new round of conflict. The high-profile exchange was the latest in a flurry of diplomatic phone calls that saw Iran's top diplomat speaking to his counterparts in the Gulf, amid fears that Trump could resume strikes despite major losses in midterms …