I would have thought most of this stuff, for anyone vaguely Left of Ed Miliband , is pretty standard fare by now. Though I fail to be particularly shocked by the undoubted summary shootings of Japanese prisoners by US soldiers. This happens in ALL theatres of war throughout history, but for the Axis miitary it was a Leadership enforced POLICY, whereas for the Allies the acts of individual soldiers and units.The typical US soldier was undoubtedly fired up by a welter of anti Japanese racist indoctrination during WWII - such as to produce the nowadays astonishing phenomenum of the widespread sending home of "Jap skulls" as "trophies" to loved ones ! This attitude was largely produced by the fear that highly motivated Japanese individual combat ferocity produced in the typical , pretty ideologically uncommitted, GI. The harsh fact is the majority of Japanese soldiery simply would't surrender, and many, many, pretended to surrender whilst concealing grenades. In the end the typical Allied soldier just shot em down wholesale.
It is simply a historical fact though that the (non aerial bombing related ) atrocities of the Japanese Imperial forces against both Allied soldiery and sundry civilian populations dwarf by a gigantic magnitude the crimes of the Allies. It's simply a fact.. the Japanese were a military/fascist regime, whereas the Allies were a Bourgeois Democratic entity -- and that actually did result in significant differences in operational behaviour vis a vis local populations and prisoners, etc. This didn't of course stop the US firebombing Tokyo , etc.and dropping 2 nukes, causing hundreds of thousands of civilian deaths, so the differences in total bodycount are not as large overall as the more "humane" battlefield prisoner practices of the Allies might suggest. Count in Japanese atrocities in China though and the Japanese Empire is WELL ahead in the total murder bodycount.
The aspect I always find more interesting, because it is generally more covered in a very deep pile of ideological bullshit, is the role of the USA, both up to and in WWI and up to , in, and after WWII. In the UK at least we still have a generally popular collective view of the USA throughout the 20th century as our very bestest, bestest pal. Whereas in reality throughout the early years of the 20th century the world naval arms race in particular was as much between the USA and the British Empire, as with Germany and Japan and France.
Certainly the long term hegemonic interests/ambitions of the USA in Latin America ( eg, the Monroe Doctrine), and its ever increasing economic hegemonic sphere of interest ambitions in the Pacific rim, always put it on a potential collision course with the British Empire quite as much as the Japanese Empire. Behind all the "we are inseparable blood cousins" bullshit from Churchill during WWII, he was always well aware that the USA fully intended to bleed the British Empire dry of its gold reserves , and was setting the scene for the post WWII collapse of the British Empire colonial possessions in its intended future "Grand Area" of hegemony, before it offered any significant support against the Axis powers.
The "decolonisation" propaganda of the USA was always predicated on the real intention to create, via its growing world economic and military dominance, a new form of global imperialism...a US Imperial world order, without formal colonial domination, but instead domination via free trade, finance and the support/installation of puppet pro-US Imperialist governments.
For most of the post WWII 20th century of course US Imperialism's topdog role and excuse for intervention all over the world was justified by its lead role as capitalism's attack dog against "Communism". Communism (in it's Stalinist perverted form) was an absolute accidental gift ideologically and strategically throughout the high water mark period of US Imperialism's world hegemony. If it hadn't existed they'd have had to invest it. Attempting to elevate the "menace" of a handful of Islamic fundamentalists to the same bogyman status as the Red Menace -- such as to justify the entire apparatus of US dominance and military intervention across the USA's "Grand Area" , just hasn't worked so well. Only Tony Blair really believed in the "War against Terror".