Russia’s widespread overnight attack targeting critical energy infrastructure facilities in Ukraine was a response to strikes on Russian territory using US-made ATACMS missiles, President Vladimir Putin said Thursday.

There was a cautious note of optimism among some Ukrainians for Gen. Keith Kellogg’s past supportive remarks for Ukraine to defend itself.

President Vladimir V. Putin said Russia has been selecting targets for missile strikes in Kyiv and that they might include “decision-making centers.”