US President Donald Trump announced the US Navy will build a new “Trump-class” battleship as part of the White House push to modernise a fleet that has been hobbled by years of cost overruns and delays. A poster displayed at the event at Trump’s gilded Mar-a-Lago estate featured an artist’s rendering of a sleek-looking warship dubbed the USS Defiant, cutting through choppy waters with a laser beam shooting from its deck and smoke billowing from a target in the background. Next to the ship was a...