Nepalese army video captures the devastation of Kosi river dam break.
The Nepalese Army resumes a rescue mission as floods caused by torrential rains have struck havoc across India, Bangladesh and Nepal and left millions displaced.
The flooding, which officials say is the worst in 50 years, was caused after the Kosi river broke a dam in Nepal where it originates, unleashing huge waves of water that smashed mud embankments downstream in Bihar state, one of India's poorest regions.
