Jeremy Black. The Cold War: A Military History. London and New York: Bloomsbury Academic, 2015. I already have a book with this title (by David Miller) but that was published in 1999, and another half-generation's distant might lend some valuable perspective. The indefatigable Black traces the Cold War all the way back to 1917, perhaps the drawing on the research for his recent book on the interwar period, Avoiding Armageddon (2012).
Michael Bryant. A World History of War Crimes: From Antiquity to the Present. London and New York: Bloomsbury Academic, 2016. China and India appear a couple of dozen times each in the index, so this is a fair attempt at a world history; but inevitably it's dominated by the evolution of war crimes (and of course the legal systems which defined war crimes) in Europe and its sphere of influence.
T.M. Devine. The Scottish Nation: A Modern History. London: Penguin, 2012. A subject I should know more about (among many others).
Lindsey A. Freeman. Longing for the Bomb: Oak Ridge and Atomic Nostalgia. Chapel Hill: University of North Carolina Press, 2015. Part history, part sociology of Atomic City -- Oak Ridge, the site of the world's second self-sustaining nuclear reactor as well as the focus of American postwar nuclear utopianism as well as disillusionment. All of that spells: fun!
Terry Moyle. Art Deco Airports: Dream Designs of the 1920s & 1930s.. London, Chatswood and Auckland: New Holland, 2015. Airports and Art Deco grew up together, so it's no surprise that there are Art Deco airports. Quite a few of them, in fact, from Le Bourget at Paris to Shushan at New Orleans. This is a very attractive, well-illustrated book, but while it's not quite an academic work it is more than a coffee table book, and it has a decent bibliography and endnotes section as well.
Robert M. Neer. Napalm: An American Biography. Cambridge and London: The Belknap Press, 2013. If you buy only one book on napalm, this is the one you want (and maybe the only one there is). We tend to associate napalm with Vietnam and maybe Korea, but of course it was born in the Second World War, where it would have incinerated more Japanese than the atomic bombs did.