Navy Lookout – The US Navy has confirmed that its planned Trump-class guided-missile battleship, whose lead ship would be USS Defiant, will be nuclear-powered. The propulsion decision could have consequences extending beyond the BB(X) programme (now redesignated BBGN), placing additional pressure on US aircraft-carrier construction and the naval nuclear industrial base, with potential second-order implications for AUKUS and the submarine programmes of Australia and Britain.