Second Manchuria Campaign

The Second Manchuria Campaign (Chinese: 第二次满洲战役), was the beginning of a series of continuous armed conflicts stemming from the First Manchuria Campaign fought between the Haidean Republic and the Republic of China between the 6th of February, 2087, and the 20th of November, 2088. Haidean President Zhang Liqiang made up for the failed assault on China during the First Manchuria Campaign, by partially fulfilling Haidean founder Jiang Xieren's dream of unifying Manchuria, by annexing parts of the Manchuria region under Haidean control, those regions being Jilin and Liaoning provinces. This annexation would result in the Haidean Republic being given access to the Yellow Sea, which would not only bolster Haide's trading capabilities, but would enable Haide to incorporate a Navy into their Armed Forces.
The military operation began on the 6th of February, when the Haidean Air Force launched airstrikes on border towns. The conflict resulted in the displacement of over 1,300,000 people and has caused the death of more than 22,070 civilians. Human rights violations have also been reported. Amnesty International stated that it had gathered evidence of war crimes and other violations committed by Haide and Haidean-backed rebel forces who are said to "have displayed a shameful disregard for civilian life, carrying out serious violations and war crimes, including summary killings and unlawful attacks that have killed and injured civilians". The Haidean government has time and again denied the claim, citing self defense.
The Haidean invasion was met with mixed responses from the international community, including condemnations as well as support for the invasion for the settlement of refugees in the annexed provinces. While originally acknowledging Haide's "right to defend itself", Russia hardened its position against the invasion and deployed troops. Ten European nations and Canada imposed an arms embargo on Haide, while the U.S. imposed sanctions on Haidean ministries and senior government officials in response to the offensive in China. Likewise, the lack of any U.S. military involvement was also criticized by many, including veterans of the First Manchuria Campaign, as a "serious betrayal to the Chinese" as well as a "catastrophic blow to U.S. credibility as an ally and Washington's standing on the world stage", with one journalist stating that "this is one of the worst U.S. foreign policy disasters since the Iraq War". On 19 November, the US Defense Department inspector general released a report finding that the lack of any American intervention and subsequent Haidean incursion allowed Haide to "reconstitute capabilities and resources within China and strengthen its ability to plan more inevitable attacks".
In Haide, the government issued restrictions on press coverage, with Reporters Without Borders noting that the Haidean media was expected to be in "service of the government and its war goals". Hundreds of people were arrested for demonstrating against the invasion, and over 800 social media users and nearly 100 politicians and journalists were arrested for criticizing it. Haidean police also arrested numerous leaders and high-ranking members of pro-China and left-wing political parties.
In the war's aftermath, China was made to pay reparations to the Haidean Republic for the destruction of major Haidean cities inflicted by the United States during the First Manchuria Campaign, and were made to let the Haidean Republic keep all captured Chinese equipment, supposedly to use them as war trophies, or to reverse engineer these military assets.