United Kingdom, June 23 -- Bruce Springsteen has reignited his long-running feud with Donald Trump.

The rocker, 75, is famous for his attacks on the US president, and has now called out what he described as the collapse of US political standards and leadership.

Speaking to The Sunday Times, he said about Trump's reign in the White House and the current political climate in the States: "It's an American tragedy."

Trump, 79, has responded to Bruce's previous criticisms from Bruce by branding the singer a "dried out prune" who "ought to keep his mouth shut until he gets back in the country".

Clearly unmoved by Trump's comments, Bruce continued his criticism in his Sunday Times interview, saying: "We're living through a terrible moment in...