US summits with Putin and European leaders offered a glimmer of hope for peace, but Russia seemed to cloud it.

KYIV, Ukraine (AP) — Russia launched a rare drone and missile attack on western Ukraine overnight, officials said Thursday, striking targets including an American-owned electronics plant and injecting further uncertainty into the U.S.-led efforts to end the three-year-old war.

Moscow has resisted a Putin-Zelensky summit and security guarantees for Ukraine. Trump’s claims that the Kremlin’s position has changed has left analysts puzzled.

Russia is facing "colossal threats" that mean it must continuously improve its nuclear weapons "shield," the chief of the state atomic energy agency warned.

Russia's nuclear shield should be strengthened in coming years due to the "colossal threats" facing the world's biggest nuclear power, the head of Russia's state nuclear corporation said on Thursday.

The so-called "snapback" clause of U.N. Security Council resolution 2231 could once again place Iran under stringent sanctions for failing to comply with the nuclear enrichment levels dictated by the Joint Comprehensive Plan of Action, the 2015 nuclear deal President Donald Trump quit in 2018.

Russia has yet again ignored Donald Trump’s bid to hold a summit between Vladimir Putin and Volodymyr Zelensky and said attempts to resolve security issues for Kyiv without Moscow’s participation was a “road to nowhere”.