Explainer-Why is Russia holding nuclear exercises - and what to watch for?
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Blinken, in Kyiv, says U.S aid arriving at 'challenging' time for Ukraine
Seven killed in Ukrainian missile strike on Russian apartment block
Russia's Belgorod governor says Ukraine shelling kills one, wounds 29
Five killed in Ukrainian strikes on Russian border regions, Donetsk, officials say
Poland will build fortifications on eastern border, PM Tusk says
Russian attack forces frustrated, hungry residents from Ukraine border town
US announces new $400 million military aid package for Ukraine, official says
Medvedev says aim of nuclear exercises is to work out response to attacks on Russian soil
Canada to give C$76 million to help buy air defenses for Ukraine
Ukraine to get its first F-16 jets in June-July, says Kyiv military source
Ukraine expects energy deficit to rise in summer due to Russian attacks