US President Donald Trump angrily said he is “not happy” with Russian counterpart Vladimir Putin and that he is considering further financial measures against Moscow following a series of deadly drone and missile strikes against Ukrainian cities.

“I’m not happy with what Putin is doing. He’s killing a lot of people, and I don’t know what the hell happened to Putin,” Trump told reporters in New Jersey as he prepared to fly back to Washington on May 25.

“I’ve known him a long time. Always gotten along with him, but he’s sending rockets into cities and killing people, and I don’t like it at all,” the US leader added.