A company whose registered office is situated on a graffitied backstreet in Sarajevo is understood to be on the verge of winning contracts valued at more than one billion dollars, according to a Guardian investigation that draws on leaked documents, corporate filings, and interviews with current and former officials in both Bosnia and the United States. AAFS Infrastructure and Energy is believed to be close to securing a concession that would allow it to build and operate a pipeline carrying liquefied natural gas shipped from the United States across the Balkans, thereby reducing the region's dependence on Russian supplies. The project has been described by one senior Bosnian official, who requested anonymity given the sensitivity of the negotiations, as potentially the most consequential infrastructure undertaking in the country's modern history. What the company appears to lack in relevant experience it may compensate for through its political connections. Among those representing AAFS is a Washington lawyer who is reported to have acted for the Trump family in political litigation, alongside the brother of the president's former national security adviser. Both individuals are said to have participated in efforts to contest the outcome of the 2020 presidential election, a cause that has remained central to Trump's political identity. The broader implications for the region are considered by analysts to extend well beyond commercial gain. Bosnia remains governed under the fragile architecture of the 1995 Dayton Agreement, which was brokered by the United States to end a war that claimed approximately 100,000 lives. Ethnic and political tensions among the country's competing leaderships have not diminished in the intervening decades, and outside observers have suggested that heavy-handed economic pressure could further destabilise an already delicate balance.…