Dozens of Pakistani nationals living in India are heading to the main land crossing between India and Pakistan, following New Delhi's decision to order almost all Pakistani citizens to leave the country after last week's deadly attack in Indian-controlled Kashmir.

Mothers have been forced to leave their children behind, the colour of their passport their only identity now.

Decades-long tensions between India and Pakistan are once again threatening regional stability, as Islamabad warns New Delhi could launch an incursion following a recent terrorist attack in Kashmir.