US star Ariana Grande

Paris's Eiffel Tower to go dark for Manchester dead

'In the face of this blind and persistent threat, cities have the duty to form a united front', said Paris Mayor Anne Hidalgo.

The Prime Minister said the attack, which also left at least 59 people injured, was the result of 'cold calculation'.

At least 22 people, including children, were killed and 59 others injured when a suicide bomber blew himself up at Grande's concert.

'I won't call them monsters because they would like that term. They would think that's a great name', Trump said.

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