The agreement between Turkey and Armenia on a “road map” to normalise their relations is very good news. Their historic animosity since the slaughter and mass deportation of Armenians from the collapsing Ottoman empire in 1915 has destabilised the region, poisoned internal politics, isolated and impoverished Armenia, and cast a shadow over Turkey’s relations with Europe and America. Now there is a chance of beginning to heal the wounds.

Yet first a word of caution. Last week’s declaration gave no clues to the precise terms of the agreement, nor a timetable. It seems to have been rushed out to enable Barack Obama, US president, to issue a statement commemorating the 1915 massacres without using the word “genocide” to describe them. That marked a sensible retreat from his election campaign position in order not to alienate Turkey.