 In the following weeks, power vacuums existed, both from outside and within Indonesia, creating an atmosphere of uncertainty, but also one of opportunity.On 19 September 1945, a group of Dutch internees supported by the Japanese raised the Dutch flag outside the Hotel Yamato (formerly Hotel Oranje, now Hotel Majapahit) in Surabaya, East Java.This provoked nationalist Indonesian militia, who overran the Dutch and Japanese and tore off the blue part of the Dutch flag, changing it into the Indonesian flag.