Last week the ratings agency Fitch warned that the Government's missing its debt target "weakens the credibility of the UK's fiscal framework, which is one of the factors supporting the [AAA] rating".
But the Chancellor, in a marked change of tone, insisted that "the credit rating is one of a number of ways in which people look at countries."
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Ben Wallace said individuals, businesses and communities need to be alert.
Giuseppe Conte travelled to the site of the disaster in the port city late on Tuesday.
Union leaders suggested the Transport Secretary was trying to cap pay rises in the industry.