Unclear what US president can achieve after direct talks between Russia and Ukraine ended without conclusion

Hello and welcome to the US politics live blog. I’m Tom Ambrose and I will be bringing you all the latest news throughout the next few hours.

Donald Trump is due to speak to both Vladimir Putin and Volodymyr Zelenskyy in an effort to stop what he called the “bloodbath” war in Ukraine.

Donald Trump’s acceptance of a $400m Boeing jet from Qatar is the “definition of corruption”, a top Democrat said on Sunday, as several senior Republicans joined in a bipartisan fusillade of criticism and concern over the luxury gift. Chris Murphy, a Democratic senator for Connecticut, condemned the “flying grift” on NBC as he assailed the president’s trip to several Gulf states this week that included a stop in Qatar.

As Trump wages a blunt attack on major law firms and the justice department, some lawyers are starting their own law firms and challenging the administration’s effort to cut funding and punish civil servants. The decision to start the firms come as the judiciary has emerged as a major bulwark against the Trump administration.

The US retail company Walmart will “eat some of the tariffs” in line with Trump’s demands, the president’s treasury secretary, Scott Bessent, has insisted, claiming he received the assurance in a personal phone call with the company’s chief executive, Doug McMillon. Walmart said last week it had no alternative to raising prices for consumers beginning later this month because it could not absorb the cost of the president’s tariffs on international trade.

A proposed rule change making it easier to fire civil servants deemed to be “intentionally subverting presidential directives” could pave the way for the White House to fire statisticians employed to produce objective data on the economy but whose figures prove politically inconvenient, experts warn. With Trump under pressure to explain shrinking gross domestic product (GDP) figures amid economists’ warnings that tariffs could trigger a recession, the administration could use new employment rules to pressure workers into “cooking the books”.

Former US president Joe Biden has been diagnosed with an “aggressive form” of prostate cancer that has spread to his bones, his office announced on Sunday, and he and his family are considering options for treatment. Donald Trump expressed concern on behalf of himself and first lady Melania Trump.

US government debt may come under more pressure this week after the credit rating agency Moody’s stripped the US of its top-notch triple-A rating.