Rishi Sunak will argue that Britain is safer under the Conservatives against the backdrop of two escalating conflicts likely to dominate the week.
In the last few days, the prime minister has broken with US President Joe Biden by insisting the UK should continue to supply arms to Israel.
It comes as Israeli PM Benjamin Netanyahu appears poised to mount another massive military operation in the southern Gaza town of Rafah against warnings from the US and UK.
Meanwhile, there are fears in Whitehall that Russia could mount an operation on Kharkiv by the end of the week to retake Ukraine‘s second-largest city.
Both operations could trigger wider repercussions.
Amid this worsening global outlook, the Conservatives want to highlight what they say is the gap between Tory and Labour pledges on military spending.
After the initial announcement, Sunak wants to ensure he gets full public credit for the big spending commitment while pushing Labour on its failure to match the promise.
Labour says that the Tory spending plan does not add up.
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Israel arms embargo ‘not a wise path’
On Monday, Sunak will use a set-piece speech to mount the argument that there is a need for security at home and abroad in an ever-increasingly dangerous world and describe the country as being at a crossroads at the next general election.
In a further major political dividing line, Labour has broken with the government and called this weekend for a suspension of arms to Israel, placing it alongside the United States.
However the Tory government is holding firm, arguing that now is not the time and that Britain only supplies a small amount of the munitions used by Israel.
Some people inside government suggest that the US government position is driven by President Biden’s need to take a tougher position to shore up votes in the upcoming election race.
Sunak’s Monday speech is one part of a set of security-themed announcements by the government, following Lord Cameron’s media blitz at the weekend.
On Monday, deputy foreign secretary Andrew Mitchell will address a Tory-leaning think tank, while on Tuesday Defence Secretary Grant Shapps will make a speech, with Chancellor Jeremy Hunt speaking on Friday.
Also, Deputy Prime Minister Oliver Dowden will lead a trade delegation this week to Saudi Arabia.
Although boosting trade will be the focus, Saudi Arabia, like Qatar, is one of the backchannels used by the UK to deliver messages to Hamas.
A woman who was stabbed to death in north London has been named by police – as a man was arrested on suspicion of murder.
Pamela Munro, 45, was found with a stab wound and died at the scene in Ayley Croft, Enfield, on Saturday evening, the Metropolitan Police said.
A 29-year-old man was arrested on suspicion of murder on Monday and is in custody, the force added.
Detective Chief Inspector Neil John said: “Investigating officers have worked relentlessly across the weekend to investigate the circumstances around Pamela’s death.
“We continue to support her family who are understandably devastated.”
Image: Police at the scene at Ayley Croft in Enfield
The Met Police has asked anyone with information or who was driving through Ayley Court between 6.30pm and 7.30pm on Saturday and may have dashcam footage to contact the force.
A “British man” has died after being beaten and set on fire by a mob in Ecuador, according to reports by media in the South American country.
According to reports, the man – who has not been officially identified – had been detained by police after being accused of being involved in a fatal shooting.
Ecuadorian news outlet Ecuavisa reported that the man had been taken to a police station Playas del Cuyabeno, a remote village in the Amazon rainforest.
While there, a group broke into the station and took the man away. He was then set on fire in the street, it is reported, and died from his burns.
Image: The incident reportedly happened in the Playas del Cuyabeno area of Sucumbios province
Another local report, from EXTRA.ec, said that specialist police units had been slow to arrive due to the geographical conditions of the area – which is accessible by river.
According to reports, police officers at the station apparently decided they could not intervene when the mob arrived out of concerns for their own safety.
It is understood the UK Foreign Office is following up reports about the incident and working with local authorities to confirm the details.
Two police cars had been following a grey Nissan van in Lichfield, Birmingham, after receiving reports of suspicious activity, the Independent Office for Police Conduct (IOPC) said.
However, they stopped chasing the van when it went off-road and up an embankment at Aston Wood Golf Club, where it hit Ms Cherry, of Aldridge, Walsall.
West Midlands Police said John McDonald, 51, of Bloxwich, has been charged with manslaughter, assault by beating and failing to stop a vehicle when directed by a constable.
Johnny McDonald, 22, of Dudley, and Brett Delaney, 34, of Darlaston, Walsall, have also been charged with manslaughter.
They are due to appear at North Staffordshire Justice Centre on 21 April.
Three other men who had been arrested have been bailed with conditions.
Following Ms Cherry’s death, her husband paid tribute to his “beautiful wife” anddescribed how he watched in “helpless horror” during the incident.
“Suzanne leaves a legacy and an unfillable void in the lives of her mother Maureen, her three adult children, two step-children and countless others from her work, her sporting activities and social circle,” he added.
The IOPC continues to investigate the circumstances prior to the crash.