Nuclear weapons remain a focal point of global tension in 2025. China's refusal to engage in trilateral disarmament talks with the US and Russia underscores the complexity of international nuclear diplomacy. Meanwhile, Ukrainian intelligence reports have uncovered crucial data on Russia's latest nuclear submarine, Knyaz Pozharsky, highlighting the intensifying arms developments. Additionally, US intelligence warns of Russia's potential use of nuclear weapons against Ukraine amidst ongoing geopolitical strife. Reports of Russia's new tactical nuclear missiles and potential development of a nuclear-armed satellite signal heightened concerns. The Trump administration reiterates the US's commitment to Europe's "nuclear umbrella," while Poland discusses hosting US nuclear weapons, reflecting evolving security dynamics in Eastern Europe. 
 What is China's stance on nuclear disarmament talks?
  
China has declared that the idea of participating in trilateral nuclear disarmament talks with the United States and Russia is "unwise," according to the country’s Foreign Ministry. This decision highlights China's reluctance to engage in discussions that could potentially limit its nuclear arsenal, focusing instead on maintaining strategic autonomy in its defense posture.
    What documents did Ukrainian intelligence obtain about Russia?
  
The Defence Intelligence of Ukraine obtained classified documentation on Russia's newest nuclear submarine, the K-555 Knyaz Pozharsky. This strategic nuclear submarine is part of the 955A Borei-A project, demonstrating Russia's continued investment in nuclear maritime capabilities which raises significant concerns among global security analysts.
    Is Russia considering supplying nuclear weapons to Iran?
  
Dmitry Medvedev, Deputy Chairman of Russia's Security Council, has categorically stated that Russia does not plan to supply nuclear weapons to Iran. This response came in light of criticism from then-U.S. President Donald Trump, easing tensions about potential nuclear proliferation in the Middle East.
    What developments are occurring at Russia's Kaliningrad nuclear facilities?
  
The Swedish media have reported that Russia is building and modernizing nuclear facilities in Kaliningrad, which could potentially host nuclear-capable equipment. Satellite imagery and reports suggest a significant military buildup, raising alarms about Russia's strategic intentions near Europe.
    What is the risk of Russia using nuclear weapons against Ukraine?
  
The U.S. intelligence community has warned of the risk that Vladimir Putin might deploy nuclear weapons against Ukraine amid ongoing military setbacks. This assessment underlines the intense pressures and potential for escalation in the region's conflict dynamics, prompting urgent international diplomatic efforts.
    Could the US deploy nuclear weapons in Poland?
  
President Andrzej Duda of Poland has indicated that there is a possibility of the United States deploying nuclear weapons on Polish soil. This development would be part of strategic defense adjustments in Eastern Europe, showcasing deepening military cooperation amid growing regional threats.
    What assurance has the US given Europe regarding nuclear protection?
  
The Trump administration assured European nations that the United States would maintain its "nuclear umbrella" over Europe. This promise is crucial for the security architecture of NATO members, ensuring deterrence against potential nuclear threats from hostile states.
    What are the implications of Russia's nuclear submarine developments?
  
Russia's development of the Knyaz Pozharsky strategic nuclear submarine demonstrates ongoing advancements in naval nuclear deterrence. This program part of the Borei-A project, highlights Russia's focus on enhancing its maritime nuclear arsenal, influencing global naval strategies and security concerns.