The 2004 Indian Ocean earthquake and tsunami which occurred on December 26 that year , caused great damage in both Maldives and Sri Lanka , as well as other Indian Ocean nations . In response , with assistance from the United States , the US$ 16.6 million Indian Ocean Tsunami Warning System ( IOTWS ) was established in 2005 to set up monitoring systems and share information between the nations at risk
2004 Indian Ocean earthquake and tsunami
2004 Indian Ocean earthquake and tsunami
Maldives–Sri Lanka relations