India is helping Ukraine fill its need for artillery shells and shifting the landscape of the Russia-Ukraine war.

A close ally of President Vladimir Putin warned Western governments on Thursday that a nuclear war would ensue if they gave the green light for Ukraine to use long-range Western weapons to strike targets deep inside Russia.

Russian officials delivered dissonant statements in the past week about how Moscow would respond to Western weapons striking deep inside its territory, and whether such attacks will happen at all. Russian diplomats played on the now-familiar threat of a nuclear response.

Russia targeted Ukrainian energy facilities and struck civilian infrastructure in overnight attacks, Ukrainian officials said on Thursday, and a U.N. monitoring body said Moscow's strikes on the power grid probably violated humanitarian law.

Ukraine destroys Russian arsenal, Poltava attack kills dozens, Russia nears rail hub. Washington considers authorizing long-range strikes.