US President Donald Trump called on NATO and European nations to take stronger action against Russia, particularly criticising Europe for continuing to buy oil from Moscow.

Speaking to reporters, Trump said, "They're not doing the job. NATO has to get together. Europe has to get together. Europe is my friend, but Europe is buying oil from Russia. I don't want them to buy oil. And the sanctions that they're putting on are not tough enough. And I'm willing to do sanctions, but they're going to have to toughen up their sanctions commensurate with what I'm doing."