Robert Mueller, the special counsel investigating Trump, is looking at his past deals. Illustration by Oliver Munday; photograph by Skynesher / Getty (hands)

President Donald Trump’s attorney Jay Sekulow recently told me that the investigation being led by Robert Mueller, the special counsel appointed by the Justice Department, should focus on one question: whether there was “coördination between the Russian government and people on the Trump campaign.” Sekulow went on, “I want to be really specific. A real-estate deal would be outside the scope of legitimate inquiry.” If he senses “drift” in Mueller’s investigation, he said, he will warn the special counsel’s office that it is exceeding its mandate. The issue will first be raised “informally,” he noted. But if Mueller and his team persist, Sekulow said, he might lodge a formal objection with the Deputy Attorney General, Rod Rosenstein, who has the power to dismiss Mueller and end the inquiry. President Trump has been more blunt, hinting to the Times that he might fire Mueller if the investigation looks too closely at his business dealings.

Several news accounts have confirmed that Mueller has indeed begun to examine Trump’s real-estate deals and other business dealings, including some that have no obvious link to Russia. But this is hardly wayward. It would be impossible to gain a full understanding of the various points of contact between the Kremlin and the Trump campaign without scrutinizing many of the deals that Trump has made in the past decade. Trump-branded buildings in Toronto and the SoHo neighborhood of Manhattan were developed in association with people who have connections to the Kremlin. Other real-estate partners of the Trump Organization—in Brazil, India, Indonesia, and elsewhere—are now caught up in corruption probes, and, collectively, they suggest that the company had a pattern of working with partners who exploited their proximity to political power.

One foreign deal, a stalled 2011 plan to build a Trump Tower in Batumi, a city on the Black Sea in the Republic of Georgia, has not received much journalistic attention. But the deal, for which Trump was reportedly paid a million dollars, involved unorthodox financial practices that several experts described to me as “red flags” for bank fraud and money laundering; moreover, it intertwined his company with a Kazakh oligarch who has direct links to Russia’s President, Vladimir Putin. As a result, Putin and his security services have access to information that could put them in a position to blackmail Trump. (Sekulow said that “the Georgia real-estate deal is something we would consider out of scope,” adding, “Georgia is not Russia.”)

The waterfront lot where the Trump Tower Batumi was supposed to be built remains empty. A groundbreaking ceremony was held five years ago, but no foundation has been dug. Trump removed his name from the project shortly before assuming the Presidency; the Trump Organization called this “normal housekeeping.” When the tower was announced, in March, 2011, it was the centerpiece of a bold plan to transform Batumi from a seedy port into a glamorous city. But the planned high-rise—forty-seven stories containing lavish residences, a casino, and expensive shops—was oddly ambitious for a town that had almost no luxury housing.

Trump did very little to develop the Batumi property. The project was a licensing deal from which he made a quick profit. In exchange for the million-dollar payment, he granted the right to use his name, and he agreed to visit Georgia for an elaborate publicity campaign, which was designed to promote Georgia’s President at the time, Mikheil Saakashvili, as a business-oriented reformer who could attract Western financiers. The campaign was misleading: the Trump Tower Batumi was going to be funded not by Trump but by businesses with ties to Kazakh oligarchs, including Timur Kulibayev, the son-in-law of Kazakhstan’s autocratic ruler, Nursultan Nazarbayev, and a close ally of Putin. Kazakhstan has the largest economy in Central Asia, based on its vast reserves of oil and metals, among other natural resources. Kazakhstan is notoriously corrupt, and much of its wealth is in the hands of Nazarbayev’s extended family and his favored associates.

Trump visited Georgia in April, 2012, at a politically vulnerable time for Saakashvili. Nine years earlier, Saakashvili had led the Rose Revolution, which overturned the country’s autocratic post-Soviet leadership. After assuming power, he initially cracked down on widespread petty corruption and cleaned up the civil service, which had functioned largely on bribes. Then, in 2008, he led a disastrous war against Russia over control of the breakaway region of South Ossetia. By then, his fight against corruption had largely ceased, and Transparency International and other N.G.O.s were reporting that élite corruption—in which wealthy, politically connected people receive better treatment from courts, prosecutors, and government administrators—was rampant in Georgia. Under these conditions, few Western investors or brands were willing to put money into the country. Saakashvili himself was increasingly unpopular, and the Trump deal was meant to help salvage his reputation.

Saakashvili showed Trump around Tbilisi, the capital, and Batumi. Georgian television covered the events fawningly, promising viewers that Trump would soon build a second tower, in Tbilisi. One broadcaster proclaimed that Trump was the world’s top developer. At the groundbreaking ceremony in Batumi, Saakashvili said that the tower was “a big deal . . . that changes everything around here.” At another event, beneath a banner that proclaimed “trump invests in georgia,” he thanked Trump for being part of the project—which, he said, had a budget of two hundred and fifty million dollars. He also awarded Trump the Georgian Order of Brilliance. Trump, in turn, praised Saakashvili. “Everybody in the world, they speak of Georgia and the great miracle that’s taking place,” he said.

Upon returning home, Trump appeared on “Fox and Friends.” Gretchen Carlson, the host at the time, asked him, “What are you going to be investing in?” He responded, “I’m doing a big development there—and it’s been amazing.” He said of Saakashvili, “He’s one of the great leaders of the world.”

Virtually none of the things that Saakashvili and Trump said about the deal were true. The budget of the Trump Tower Batumi was not two hundred and fifty million dollars but a hundred and ten. Trump, meanwhile, could hardly have invested such a sum himself. He professed to be a billionaire, but a few months earlier an appeals court in New Jersey had shut down Trump’s legal campaign against Timothy O’Brien, the author of “TrumpNation,” which argued that Trump had wildly inflated his fortune, and was actually worth less than a quarter of a billion dollars. Julie George, a political scientist at Queens College who studies Georgia, told me that, by 2012, Saakashvili’s tenure could in no way be considered a “great miracle.” The country’s economy was floundering, and shortly after Trump’s visit it was revealed that the government had been torturing political opponents. (Saakashvili did not respond to requests for comment.)

The announcement of the Batumi tower was handled with cynical opportunism by both Trump and Saakashvili, but that was not the deal’s biggest problem. The developer that had paid Trump and invited him to Georgia—a holding company known as the Silk Road Group—had been funded by a bank that was enmeshed in a giant money-laundering scandal. And Trump, it seemed, had not asked many questions before taking the money.

Before the collapse of the Soviet Union, in 1991, Batumi had been a popular resort town, but by the early aughts it had fallen into disrepair. Its beachfront hotels housed refugees from the nearby Abkhazia region, which had broken away from Georgia in 1992. Batumi was the capital of the semiautonomous Adjara region, which was itself on the verge of declaring independence. Saakashvili saw the redevelopment of Batumi as critical for maintaining Georgian sovereignty there. Batumi residents promised to turn the city into the Monaco of the Black Sea.