Generally, the Washington Post is the outlet for interests and concerns of the CIA or international elements of the U.S. intelligence community. Narratives from the Washington Post usually shape storylines against scrutiny of the Intelligence Community.
It has been widely reported that the FBI has been working closely with the National Anti-Corruption Bureau of Ukraine (NABU) in detecting and discovering corruption amid Ukraine officials who have skimmed money from various international aid programs. However, the Washington Post is suddenly concerned that FBI Director Kash Patel and Deputy FBI Director Dan Bongino have held "secret meetings" with lead Ukraine peace negotiator Rustem Umerov.
This becomes interesting if you have followed along and noted that during negotiations the reports of Rustem Umerov indicated his concurrence with the peace agreements structured by Marco Rubio, Steve Witkoff and Jared Kushner. Indeed, based on feedback during these meetings President Trump has said the Ukraine delegation appeared "quite happy" with the terms of the Witkoff/Kushner proposals, while Ukraine President Zelenskyy was less accepting.
Between the lines of statements following the consultations, it is easy to get the sense that Rustem Umerov is in alignment with the U.S. proposals, but Volodymyr Zelenskyy is not. Hence, Zelenskyy keeps returning to his U.K, France, Germany and EU support network for counterproposals despite his officials like Umerov working with the U.S. team directly.
This paragraph from within the WaPo (CIA) framework seems to tell a background story:
[...] "The meetings have caused alarm among Western officials who remain in the dark about their intent and purpose. Some said they believe Umerov and other Ukrainian officials sought out Patel and Bongino in the hopes of obtaining amnesty from any corruption allegations the Ukrainians could face. Others worry the newly established channel could be used to exert pressure on Zelensky's government to accept a peace deal, proposed by the Trump administration, containing steep concessions for Kyiv." (more)
The FBI working with NABU to uncover Ukraine corruption. The FBI is meeting with Ukraine lead negotiator, Rustem Umerov. A massive corruption scandal has just taken down Zelenskyy's main aide, Andriy Yermak.
"The discussions [between the FBI and Umerov] are happening at a critical moment for Ukraine. It is under pressure by the Trump administration to agree to an end-of-war proposal with huge implications for the country's borders and territorial integrity.
It is also facing its most far-reaching corruption scandal since Zelensky took office in 2019. Ukrainian investigators alleged last month that $100 million had been stolen from the country's energy sector through graft and kickbacks.
Eight people, including Zelensky's former business partner, are accused of embezzlement, money laundering and illicit self-dealing. Zelensky's top aide, Andriy Yermak, the second most powerful person in Ukraine, resigned in late November after his house was raided. Another close former ally of Zelensky, Oleksiy Chernyshov, who served as deputy prime minister, is accused by Ukrainian authorities of receiving $1.3 million in kickbacks." {link}
Perhaps Zelenskyy's primary negotiator for the USA team, Rustem Umerov, has specific knowledge of corruption connected to the generous financial support the USA has provided Ukraine. Watching Yermak get taken down within the FBI/NABU investigation, might have triggered Umerov to cooperate on several levels.