A satellite image taken by a Japanese weather satellite shows an undersea volcano eruption at the Pacific nation of Tonga Saturday, Jan. 15, 2022. (Japan Meteorology Agency via AP) AP hide caption toggle caption AP World An undersea cable fault could cut Tonga from the rest of the world for weeks January 18, 2022 Amid the 7.6-magnitude quake, the single fiber optic cable that the archipelago relied on for global communications ruptured.