内容摘要："So sad that such things as this can happen! God bless you all!"

"So sad that such things as this can happen! God bless you all!"

A fourth man has been arrested over a series of fires connected to Prime Minister Sir Keir Starmer, the Metropolitan Police has said.The 48-year-old was arrested on Monday at London's Stansted Airport after initially being stopped by officers under schedule 7 of the Terrorism Act, 2000.

He was later arrested on suspicion of conspiracy to commit arson with intent to endanger life.The charges relate to three incidents - a vehicle fire in Kentish Town, north London, a fire at the prime minister's private home on the same street and a fire at an address that he previously lived in Islington, north London.The man, who has not been named, has been taken to a London police station and remains in custody.

Three men have already been charged in connection with the fires, Ukrainians Petro Pochynok, 34, and Roman Lavrynovych, 21, and Ukrainian-born Romanian national Stanislav Carpiuc, 26, who are all due to appear at the Old Bailey on Friday.Mr Lavrynovych, of Sydenham, is charged with three counts of arson with intent to endanger life.

Mr Carpiuc, of Romford, and Mr Pochynok, of north London, was charged with conspiracy to commit arson with intent to endanger life.

In the early hours of May 12, a fire took place at the home where Sir Keir lived before he became Prime Minister and moved into Downing Street.A defence source also told the BBC the commitment to build up to 12 new attack submarines would require an increase in defence spending to at least 3% of GDP.

Ministers say they expect to spend 3% of GDP on defence by 2034 at the latest but have given no guarantees - and the run-up to the review's release has been dominated by a political row over when government will hit the milestone.The Conservatives say the move - which would hike spending by around £20bn a year - should be met by the end of the decade.

Cartlidge said that "without the funding, [the review] is an empty wish list" and the "ships and submarines it talks of are a fantasy fleet".The government "wants to send a strong message to Moscow, but the messages he's sending are profoundly weak", Cartlidge added.