US politics briefing: Trump administration warns Kyiv and picks up court win in mass firings case

From the Trump administration's latest moves abroad and in the US - here are the key US politics stories from Thursday at a glance

Thursday saw a judge rule that the Trump administration can continue the mass firing of US federal workers, rejecting a bid by labor unions to stop the US president dramatically cutting the jobs of many of the 2.3 million people employed by the government. The IRS began laying off roughly 7,000 workers on Thursday.

In his 16-page order, US district judge Christopher Cooper started by saying that Trump's executive actions had caused, some say by design, disruption and even chaos in widespread quarters of American society".