Many of the front pages feature reaction to US President Donald Trump's announcement of an energy ceasefire between Ukraine and Russia. The Guardian and the Times both highlight the fact that Ukrainian President Volodymyr Zelensky appeared to be unaware of the truce before it was announced. The Daily Telegraph leads on Zelensky's claims that Russia has continued to strike energy sites. The headline is "Putin breaks Trump's 'ceasefire'". The paper's editorial argues that the main problem with the deal is that it "only exists in the US President's head".

According to the Financial Times, the Trump administration is threatening to cut off weapons supplies to Ukraine as part of efforts to stop it attacking Russian energy infrastructure. European officials have told the paper they received calls from their American counterparts discussing such plans over the weekend. The White House has declined to comment.

The Daily Mail focuses on Boris Johnson labelling Trump's agreement with Russian President Vladimir Putin to lift sanctions so Russia can supply diesel to US and global markets as "sickening". The former prime minister also says the Royal Navy should intercept any Russian fuel ships in the English Channel.

The Guardian reports that ministers are preparing to slash the funds available to subsidise heat pumps, as they look for savings to increase defence spending. The programme is not expected to be abolished, but sources tell the paper that hundreds of millions of pounds could be cut from the scheme's £2.7bn budget. A government spokesperson has said details of how investment in the country's national security will be set out this autumn.

And the world of chessboxing is highlighted by the Times, after one of the founders of the hybrid sport called time on his career. The paper says Matt "Crazy Arms" Read achieved the "fairytale farewell" with a final victory in the sport, which sees combatants alternate between rounds of chess and boxing. The 47-year-old is quoted as saying: "you always want to end on a high.... but to be honest Father Time has caught up with me".

Sign up for our morning newsletter and get BBC News in your inbox.