The Indonesian War Superevent fires at the start of the aforementioned war, engulfing the Islands, often rather suddenly representing the Pacific's collapsing status quo. Indonesia is one of Japan's most valuable conquests in World War 2, representing a major threat to Australia - hence the desire for both Super-Powers to intervene.
The line "The Pacific Alight" demonstrates how badly destabilized South-East Asia has grown since the Malay Emergency and the Conflict in the Philippines, which usually occurs before Indonesia.
The music that plays is a rendition of Indonesia Raya (the Indonesian National Anthem), but not just any version: it is a 1945 rendition made by the Japanese propaganda forces to inspire Indonesian nationalists to their cause. This version includes at the start a quotation of Aikoku Koshin-kyoku, literally "Patriotic March", made by the Japanese at the start of the war. While this lively musical quotation plays, an excerpt from a speech by Mohammad "Bung" Hatta is heard. He says (according to Youtube comments):
Hatta: The audience, my brothers, I would like to say my greetings beforehand, FOR INDEPENDENCE"
The Audience: FOR INDEPENDENCE!
This juxtaposes the Indonesians' pride over their independence with the price they paid to gain it, namely the dominance of Japan over their nation. Notably, the 10-13 seconds at the start of the Superevent are clear; this is when Hatta's call for Independence and Japan's music are playing proudly. Shortly afterward, the rest of the Superevent's audio is discordant and out of tune, representing the deteriorating situation in Indonesia as Hatta's forces rally to attempt to oust Sukarno's increasing authoritarianism. Indonesia is left to think, "where did the revolution go wrong?" as the music stops and the war begins.
The imagery of the Superevent is also interesting to look at - the source picture is actually of the Singaporean Infantry, labeled "Members of the Second Battalion Singapore Infantry Regiment (SIR) in the jungles of Johor, Malaysia. The SIR was deployed to combat armed Indonesian infiltrators in Malaysia". This could be interpreted two ways - the soldiers could be fighting for Japan in the civil war, or they could be CIA infiltrators from a freed Malaysia (which is one of the CIA's operations from Malaysian into Indonesia).
The quote "We prefer independence with poverty to servitude with plenty" by Sekou Toure, a Guinea Independence leader and President, further highlights the contradiction between the Japanese and Co-Prosperity Sphere's Vision of anti-colonialism with Hatta's desire for a more equal relationship with Japan.
Together, these elements represent the tragedy that is the Indonesian War. Unlike other wars in the region, where Japanese collaborators are unstable and basically entirely propped up by the Japanese military, both sides in Indonesia have a legitimate claim to being representatives of the people. Indonesia did achieve a modicum of independence during the World War, and the main two leaders were once very good friends. As a result, this war is closely fought (Malaysia tends to favor the OFN-backed rebels and the first round of the Philippines tends to put the Co-Prosperity Sphere in a tight spot). The audio represents both halves of the conflict - Hatta's energetic call for Independence, Japan and Sukarno's call for unity and mutual benefit, and a confused Indonesia represented by their out-of-tune anthem.
fires at the start of the aforementioned war, engulfing the Islands, often rather suddenly representing the Pacific's collapsing status quo. Indonesia is one of Japan's most valuable conquests in World War 2, representing a major threat to Australia - hence the desire for both Super-Powers to intervene.