ISLAMABAD: Pakistan’s top disaster management body has warned that the country is facing a climate emergency as major natural hazards have been hitting every two months and now pose a grave “national security threat,” underscoring the urgent need for resilience and preparedness measures. Pakistan, which ranks among the world’s most climate-vulnerable nations, has experienced increasingly erratic, frequent weather events, including heat waves, untimely rains, storms, cyclones and droughts, in recent years, which scientists have blamed on human-driven climate change.