Negotiations between Afghanistan and Pakistan to secure a lasting truce after their bloodiest clashes in years were deadlocked.
A Pakistani security source said a "last-ditch effort" was underway to resolve the issue.
After an initial 48-hour ceasefire lapsed, a second truce emerged on October 19 following talks in Doha, mediated by Qatar and Turkey.
Talks in Istanbul began Saturday, aiming to establish long-term peace.
A "last-ditch effort" was underway to resolve the issue.
Author's summary: Afghanistan and Pakistan talks stalled.