For context that the Daily Beast clearly doesn't care to give: the "an army building" is the army headquarters, on prime realestate, hit in the bombing and intentionally left in disrepair. It's a memorial already. The lot is being leased, basically as a gift, to Kushner, to build a luxury hotel. The repeated, blatant corruption has drawn criticism of the government and Kushner from the Serbian people.
The "Memorial to the victims statement" is meant to paper over this.
My point is >8 years ago only the left seemed to notice inappropriate NATO operations. Now that there's an actual threat at stake where NATO is extremely important, the right is losing their mind about NATO. It's fucking wild.