Peru has welcomed a move by Chilean TV to shelve, for now, a series about the 19th Century War of the Pacific, which pitted Chile against Peru and Bolivia.
But some Chilean politicians condemned the decision, accusing the state-owned TVN of yielding to government pressure.
Foreign Minister Alejandro Foxley said he had given his opinion but denied putting any pressure on TVN.
The 1879-1884 war, in which Chile annexed Bolivian and Peruvian territory, remains a source of tension.
TVN said it planned to broadcast Epopeya (Epic) at a later date. It had originally been scheduled to run this week.
The station said it had listened to the opinions of Mr Foxley and the Peruvian ambassador in Chile, but had acted with autonomy.
The Peruvian government described it as the "right decision".
For his part, Mr Foxley said he had felt it necessary to give his opinion.
"We determined we were at a turning point in establishing a relationship with Peru that would help us heal historic wounds, and I thought it was important that TVN have all the facts needed to make a decision," Mr Foxley said.
"Any one of you who has visited these neighbouring countries [Peru and Bolivia] can tell you how enormously touchy some of these issues are."
But Sergio Bitar, leader of Party for Democracy (PPD) - a member of the governing coalition - said it went against freedom of expression.