The appointment of a new ayatollah shortly after the death of Ali Khamenei highlights a major shortcoming in Donald Trump's plot for Iranian regime change, an analyst wrote Tuesday.Despite the president's team carrying out a series of strikes against the Middle Eastern country earlier this month, the only changes made so far, according to CNN analyst Stephen Collinson, are beneficial to Iran. Trump may have succeeded in removing the country's former head, but his replacement, Collinson believes,...