You just know if this manga was about Palestine and Israel, the mangaka would be cancelled so hard.
Or even the same war before it became news-worthy; for the eight years from 2014 when it was the Donetsk and Luhansk People's Republics on the back foot. I feel like an alien. Does truly no one remember the footage of early battles for Odessa and the Donetsk airport? Does no one remember the footage of Givi? Or the Azov battalion posing with severed heads?
I don't care about the petty arguement with that other guy or whatever but what's notable that you bring up is that there are truly no manga anymore about war in SE Asia, Africa, or Latin America. Why did these stories fall out of fashion? What happened to this previous line of Seinen manga like Eden, Omega Tribe, Taniguchi Jirou's Enemigo, etc.? These are of course a small part of a larger hardboiled Seinen genus that includes stuff like Mother Sarah, TWIM, the rest of Taniguchi's work, and so on, but taking place in third-world countries. They don't compare to the broadly-similar violent Seinen manga of today like Firepunch, where war is a piece of the puzzle (remember the ending to firepunch? LOL) rather than whole image when pieced together. So where did they go? I think they left with the Soviet Union.
Do you remember the pistol Mion has in Higurashi no Naku Koro ni? It's a Tokarev. Hinamizawa is a stand-in for Sanrizuka, and TWIM made a direct reference to the Asama-Sansou massacre while also making the Tokarev it's most featured steel, the Asama-Sansou incident having its footage make for live television that reached the propotionally largest audience yet in Japan. The Sanrizuka struggle and the Asama-Sansou massacre were overtly communist, any consideration for them has its basis in the existence in the Soviet Union. And so when the Soviet Union died, so did Sanrizuka and the Asama-Sansou incident (or politics generally, remember Fukuyama?). This came with a delay (Black Lagoon began publishing in 2001, Higurashi in 2002), as the introduction of the anarchy of the free market to the Soviet Union also brought with it Soviet weaponry to the anarchy of the international free market. There could be no TWIM or Higurashi without the fall of the Soviet Union because that is the only place wherefrom one can buy HE, Tokarevs, and AKs. Gangs even used AKs openly in the streets in Japan once or twice.
So why was the Soviet Union the reason for stone-cold war-feature Seinen in the first place? The Soviet Union brought the first-world countries back to Earth through constant and universal threat. Japanese investment in South America in the 80s was directly threatened by Soviet weaponry, but even moreso threatening, the mere existence of the Soviet Union and even its internal political issues fueled Japanese politics, from the Anpou protests to the Asama-Sansou massacre. The Soviet Union served as a symbol that one can always strive for politics, such as the KAK sending thousands of arms to Palestine, the Cuban Revolution, or the Japanese URA hijacking multiple planes. With the death of the Soviet Union there is today nothing. American politics are embarassing and as election season within the US has reached its hottest point the most embarassing part is the lack of politics. Any imposition of politics onto either fandom is met with hysteria. It's hard to imagine that this is the same country that feverishly killed so many in Iraq.