[13][14] In 2000, Fuks invested in an oil company named Nefthold LLC, which was later found to have connections with Russian politicians and government officials.

[20] According to records from the Ministry of Internal Affairs, Fuks was assigned the Russian nickname "Naemnik," translating to "mercenary" in English.

[5] In March 2018, the London International Arbitration Court ordered the now-defunct MosCityGroup (MCG) to pay $55 million to a division of BTA Bank.

In 2009, MCG had acquired a stake in the Eurasia Tower (Moscow City) from Mukhtar Ablyazov, a fugitive and former Kazakh banker who was the former owner of BTA Bank.

Kenes Rakishev, the new owner of BTA Bank, stated that MCG failed to pay the second tranche of $30 million as part of a deal to purchase a 50 percent stake in the Eurasia construction project.

The report revealed that Fuks was negotiating the acquisition of Quickpace Limited, a Cypriot company holding $160 million in assets managed by Viktor Yanukovych, the fourth President of Ukraine, and sanctioned oligarch Serhiy Kurchenko.

[2][4][33] In 2015–2017, the Cypriot offshore company Hartlog Limited, whose beneficiary, according to the Russian Anti-Corruption Center, is Pavel Fuks,[34] bought 67 % of Golden Derrick shares from Eduard Stavytsky.

In 2017, the State Service of Geology and Subsoil of Ukraine (the owner of Nadra Ukrayiny) transferred 16 licenses for gas fields to East Up Petroleum.

In an official statement, Nadra Ukrayiny emphasized that during the entire time of participation in Golden Derrick's share, and then in East Up Petroleum, the company did not receive any dividends and did not influence the activities.

"[36] Public outcry was caused by the information about the complete transfer by Nadra Ukrayiny of its remaining share (33 % of the company) to Avant Trade Limited, which is also strongly associated with Pavel Fuks.

Thus, at the end of 2017, Golden Derrick founded a dozen and a half companies in Kyiv, which indicate exploratory drilling and production of hydrocarbons as their main activity.

Subsequently, East Up Petroleum planned to transfer one or two gas production licenses to each of these companies with the further goal of a full sale of assets.

Together with Ihor Kolomoyskyi and Vitaliy Khomutynnik, Pavel Fuks is a co-owner (18%) of Ukrnaftoburinnya, one of Ukraine's largest gas producers worth $500 million.

[47] According to Intelligence Online and Business Insider, Ukraine had requested that Fuks be sanctioned by US and his visa was revoked at the border and he was subjected to expedited removal from U.S. in 2018.

"[49] This decision imposed sanctions against businessmen Pavel Fuchs and Dmitry Firtash, as well as against Russian high-ranking officials and oligarchs.

[50] Oleksiy Danilov, Secretary of the NSDC, stated that the sanctions against Fuchs were related to Golden Derrick, a gas production company that allegedly obtained relevant licenses illegally.

[54][55] In 2021, the publication "Obozrevatel" lost a court case against Fuchs concerning the protection of his business reputation related to the bankruptcy of "Zolota Medisna" LLC.

[58] On June 24, 2024, the President of Ukraine issued a new decree that enacted a decision by the National Security Council, extending the sanctions against Pavel Fuchs for an additional ten years.

[61] In 2012, Fuks obtained a Tier 1 Investor visa, a UK program that granted residency to foreign nationals investing at least £1 million; the scheme initially had limited oversight.

The decision of the city council was made despite protests from the public, which picketed its meetings, due to the fact that most of the deputies belonged to the faction of the pro-Russian Party of Regions, which was later banned in Ukraine.

After the failed vote to exclude the Russians from the list of honorary citizens, the opposition in the Kharkiv City Council appealed the awarding of the title to Fuks and Shishkin to the prosecutor's office.

In August 2023, Kharkiv Mayor Ihor Terekhov, in response to public criticism, agreed that the list of honorary citizens of the city should be revised.