Global stocks under a cloud as U.S. political uncertainty adds to growth fears

TOKYO (Reuters) - Global stock markets were heading into the year-end under a heavy cloud after another rout this week as U.S. political uncertainty added to heightened concerns over slowing global economic momentum. Asian equities were shaky on Wednesday following the plunge in Wall Street on Christmas eve in the face of a series of unnerving U.S. political developments, including a U.S. federal government shutdown and President Donald Trump's increasingly hostile stance towards the Federal..