New Delhi, Oct 12 (ANI): The BJP on Sunday slammed Pakistan for writing to the UN chief on the security situation along the LoC and the International Border with India. In a letter to UN chief Ban ki-moon, Adviser to the Pakistan Prime Minister on National Security and Foreign Affairs Sartaj Aziz accused India of "deliberate and unprovoked violations of the ceasefire agreement and cross-border firing" over the past weeks.