Washington, July 25 President Donald Trump on announced that four privately funded advanced reactors had reached critical milestones under an administration-backed programme aimed at accelerating nuclear innovation.Speaking at the White House alongside senior administration officials and executives from four nuclear technology companies, Trump said the achievement marked the beginning of a new era for the US nuclear industry after decades of decline."America is building again. America is dreaming again, and we're leading the world in pioneering the next generation of nuclear power and there's nobody even close," Trump said.He said the administration had exceeded a goal he set through four…