Hillary Clinton, the US secretary of state, who along with Bill Clinton, her husband and then US president, helped broker a peace deal between Britain and Northern Ireland in the mid-1990s is visiting Belfast.
Clinton's arrival on Friday came a day after a car full of explosives led to the arrest of four people in the province.
With the Irish Republican Army announcing a recent reformation, Clinton's visit comes at a time when one of her legacy achievements is seen as being in a shaky state.
Al Jazeera's Laurence Lee reports from London.
Source: Al Jazeera