Tokyo stocks tumbled Tuesday, with the Nikkei index dropping over 300 points, dragged down by concern over US President Donald Trump's entry ban on nationals of seven countries.

    The 225-issue Nikkei Stock Average ended down 327.51 points, or 1.69%, from Monday at 19,041.34.  The broader Topix index of all First Section issues on the Tokyo Stock Exchange finished 22.10 points, or 1.43%, lower at 1,521.67, according to (Kyodo) news agency. 

    Decliners were led by iron and steel, marine transportation and bank issues