President Donald Trump has branded the terrorist who attacked Manchester Arena 'an evil loser' as he led world leaders in condemning the atrocity.

Mr Trump said the US stands in solidarity with Britain following the attack which killed at least 22 and injured 59 last night.

Vladimir Putin also offered to boost anti-terror cooperation with the UK after the 'inhuman' attack on an Ariana Grande concert.

Newly elected French President Emmanuel Macron expressed his 'horror and shock' at the attack as German Chancellor Angela Merkel assured Britain that 'Germany stands at your side'.