From a New York Times news analysis by Peter Baker headlined “Global Power Struggles Signal An End to an Era of Diplomacy”:

President Biden leaves on Tuesday for Northern Ireland to mark the 25th anniversary of the Good Friday Agreement, which ended decades of sectarian violence. But the commemoration also serves as an unspoken reminder that such diplomatic breakthroughs have become a thing of the past.

At a time of ferocious warfare in Europe and crackling tension elsewhere around the globe, the sort of bold, painstaking negotiation that brought peace to the Emerald Isle a quarter-century ago has largely disappeared from the scene. Bargaining tables sit empty these days. Shuttle diplomacy planes have been grounded. Treaties are more likely to be broken than brokered.