Authorities on Wednesday began evacuating about 12,000 residents after Indonesia’s Mount Ruang volcano erupted, spewing ash and rocks. Mount Ruang, located in the Sangihe Islands arc in North Sulawesi province, has been increasingly active in recent weeks. Authorities on Tuesday raised the alert level to the highest possible after new eruptions, warning of potential pyroclastic flows, deadly ash surges and the possibility of tsunami. The eruption also caused a power outage on neighbouring Tagulandang island and forced the closure of Sam Ratulangi International Airport in Manado, disrupting air…