The 'hand of history' is a phrase coined by British Prime Minister Tony Blair in April 1998 during negotiations for the Good Friday Agreement.
On 7 April 1998 the negotiations for the Good Friday Agreement were close to collapse due to the unease of the Ulster Unionist Party leader David Trimble over the extent of cooperation between Northern Ireland and Dublin.
[1] Blair's advisers Alastair Campbell and Jonathan Powell immediately asked him if he remembered what he'd just said as his statement was paradoxical.
[1] Powell later wrote in his memoir, Great Hatred, Little Room, that he had "...propelled him [Blair] straight back out without giving him time to prepare carefully what he would say" as they had been anxious to start negotiating.
[3] In a 2018 article in The Irish Times, journalist David Young felt that the phrase was a "satirist's dream" as Blair's New Labour government had been "...accused of putting spin ahead of substance" and Blair had "served up a juicy soundbite in the very same sentence he had warned against them".