After days of intense firefights, Indian and Pakistani authorities said on Monday there were no reported incidents of firing overnight along the heavily militarized region between their countries, the first time in recent days that the two nations were not shooting at each other.

India and Pakistan, South Asia’s rival nuclear powers, are on the brink of all-out war. Such a conflict would be catastrophic, not only for the region’s 2 billion people, but for the entire world.

Regional powers—notably Saudi Arabia and Iran—are increasingly choosing a side in the ongoing fracas between New Delhi and Islamabad.