At 2.09 am on Saturday, Ahmad Subhan, who lives near an air base in the Pakistan military garrison city of Rawalpindi, heard the first explosion that rattled the windows of his house - and took South Asia to the brink of war.

India scaled down its diplomatic relations with Pakistan as part of its retaliatory measures. It expelled all Pakistani defence attachés, declaring them "persona non grata" (unwelcome) and announced it would withdraw its own defence advisers from its high commission in Islamabad.

Pakistani officials have said Saturday’s ceasefire with India reestablished deterrence. But New Delhi insists the rules of engagement have irrevocably changed.