London Daily

Focus on the big picture.
Thursday, Dec 04, 2025

Cop26 failure could mean mass migration and food shortages, says Boris Johnson

Ahead of G20 meeting, PM warns of ‘difficult geopolitical events’ echoing those that ended Roman empire
A failure by world leaders to commit to tackling the climate emergency at the Cop26 summit in Glasgow could prompt “very difficult geopolitical events” including mass migration and global competition for food and water, Boris Johnson has said.

Speaking before the start of a gathering of leaders from the G20 industrialised nations in Rome, where he will push for countries to arrive in Glasgow with fixed plans to cut emissions, Johnson said the chances of success hung in the balance.

In a round of broadcast interviews in Rome, he was reminded that he had said in September that there was a six out of 10 probability of the Cop summit producing the necessary action, and asked what he now thought.

“I’d say they’re about the same,” he told the BBC. “I think that everybody needs to focus. What the UK has been trying to do is take the abstract concepts of net zero that we talked about in Paris six years ago, and to turn them into hard, sharp deliverables in terms of reducing coal use, reducing the use of internal combustion engines, planting millions of trees and getting the cash that the world needs to finance green technology.’’

Speaking to reporters on the way to Rome on Friday, Johnson used the example of the collapse of the Roman empire to highlight what he said was the possibility of runaway climate change bringing a decline in civilisation.

Questioned about the stakes for Cop26 in Rome, where he was interviewed next to the Coliseum, Johnson reiterated his warnings about the consequences for the globe.

“If you increase the temperatures of the planet by four degrees or more, as they are predicted to do remorselessly, you’ll have seen the graphs, then you produce these really very difficult geopolitical events,” he told Channel 4 News.

“You produce shortages, you produce desertification, habitat loss, movements, contests for water, for food, huge movements of peoples. Those are things that are going to be politically very, very difficult to control.

“When the Roman empire fell, it was largely as a result of uncontrolled immigration. The empire could no longer control its borders, people came in from the east, all over the place, and we went into a dark ages, Europe went into a dark ages that lasted a very long time. The point of that is to say it can happen again. People should not be so conceited as to imagine that history is a one-way ratchet.

“Unless you can make sure next week at Cop in Glasgow that we keep alive this prospect of restricting the growth in the temperature of the planet then we really face a real problem for humanity.”

Johnson has faced criticism this week for his own inaction over tackling emissions, with Wednesday’s autumn budget again froze fuel duty, and cut levies on shorter, domestic flights, but he arrived in Rome bearing a blunt message for fellow G20 leaders.

“Too many countries are still doing too little,” the prime minister’s spokesperson said, setting out the message that will be delivered.

“As the countries with the greatest historic and modern contributions to global warming, who have built their economies on the backs of burning dirty fossil fuels, the G20 holds the key to unlocking global action and making the progress we so badly need to live up to our commitments.”

Asked on Saturday whether the cut to passenger duty had undermined his message, Johnson rejected this.

“We increased air passenger duty for long-haul flights, 96% of CO2 emissions come from long haul flights,” he told Channel 4 News. “What we will do is ensuring we have proper connectivity in the islands of the United Kingdom, which is an entirely sensible thing to do.”

In Rome, Johnson will hold bilateral talks with Scott Morrison, the Australian prime minister, whose own record on reducing emissions has been heavily criticised, as well as Canada’s Justin Trudeau and Italy’s Mario Draghi.

Johnson is not due to hold a one-on-one meeting with Joe Biden, the US president, who will be at the G20 and Cop26, although the pair will attend a meeting in Rome about the Iran nuclear deal.

Also attending this meeting will be the French president, Emmanuel Macron, and the German chancellor, Angela Merkel, who is expected to bring along her likely successor, Olaf Scholz, currently the finance minister.
Newsletter

Related Articles

0:00
0:00
Close
India backs down on plan to mandate government “Sanchar Saathi” app on all smartphones
King Charles Welcomes German President Steinmeier to UK in First State Visit by Berlin in 27 Years
UK Plans Major Cutback to Jury Trials as Crown Court Backlog Nears 80,000
UK Government to Significantly Limit Jury Trials in England and Wales
U.S. and U.K. Seal Drug-Pricing Deal: Britain Agrees to Pay More, U.S. Lifts Tariffs
UK Postpones Decision Yet Again on China’s Proposed Mega-Embassy in London
Head of UK Budget Watchdog Resigns After Premature Leak of Reeves’ Budget Report
Car-sharing giant Zipcar to exit UK market by end of 2025
Reports of Widespread Drone Deployment Raise Privacy and Security Questions in the UK
UK Signals Security Concerns Over China While Pursuing Stronger Trade Links
Google warns of AI “irrationality” just as Gemini 3 launch rattles markets
Top Consultancies Freeze Starting Salaries as AI Threatens ‘Pyramid’ Model
Macron Says Washington Pressuring EU to Delay Enforcement of Digital-Regulation Probes Against Meta, TikTok and X
UK’s DragonFire Laser Downs High-Speed Drones as £316m Deal Speeds Naval Deployment
UK Chancellor Rejects Claims She Misled Public on Fiscal Outlook Ahead of Budget
Starmer Defends Autumn Budget as Finance Chief Faces Accusations of Misleading Public Finances
EU Firms Struggle with 3,000-Hour Paperwork Load — While Automakers Fear De Facto 2030 Petrol Car Ban
White House launches ‘Hall of Shame’ site to publicly condemn media outlets for alleged bias
UK Budget’s New EV Mileage Tax Undercuts Case for Plug-In Hybrids
UK Government Launches National Inquiry into ‘Grooming Gangs’ After US Warning and Rising Public Outcry
Taylor Swift Extends U.K. Chart Reign as ‘The Fate of Ophelia’ Hits Six Weeks at No. 1
250 Still Missing in the Massive Fire, 94 Killed. One Day After the Disaster: Survivor Rescued on the 16th Floor
Trump: National Guard Soldier Who Was Shot in Washington Has Died; Second Soldier Fighting for His Life
UK Chancellor Reeves Defends Tax Rises as Essential to Reduce Child Poverty and Stabilise Public Finances
No Evidence Found for Claim That UK Schools Are Shifting to Teaching American English
European Powers Urge Israel to Halt West Bank Settler Violence Amid Surge in Attacks
"I Would Have Given Her a Kidney": She Lent Bezos’s Ex-Wife $1,000 — and Received Millions in Return
European States Approve First-ever Military-Grade Surveillance Network via ESA
UK to Slash Key Pension Tax Perk, Targeting High Earners Under New Budget
UK Government Announces £150 Annual Cut to Household Energy Bills Through Levy Reforms
UK Court Hears Challenge to Ban on Palestine Action as Critics Decry Heavy-Handed Measures
Investors Rush Into UK Gilts and Sterling After Budget Eases Fiscal Concerns
UK to Raise Online Betting Taxes by £1.1 Billion Under New Budget — Firms Warn of Fallout
Lamine Yamal? The ‘Heir to Messi’ Lost to Barcelona — and the Kingdom Is in a Frenzy
Warner Music Group Drops Suit Against Suno, Launches Licensed AI-Music Deal
HP to Cut up to 6,000 Jobs Globally as It Ramps Up AI Integration
MediaWorld Sold iPad Air for €15 — Then Asked Customers to Return Them or Pay More
UK Prime Minister Sir Keir Starmer Promises ‘Full-Time’ Education for All Children as School Attendance Slips
UK Extends Sugar Tax to Sweetened Milkshakes and Lattes in 2028 Health Push
UK Government Backs £49 Billion Plan for Heathrow Third Runway and Expansion
UK Gambling Firms Report £1bn Surge in Annual Profits as Pressure Mounts for Higher Betting Taxes
UK Shares Advance Ahead of Budget as Financials and Consumer Staples Lead Gains
Domino’s UK CEO Andrew Rennie Steps Down Amid Strategic Reset
UK Economy Stalls as Reeves Faces First Budget Test
UK Economy’s Weak Start Adds Pressure on Prime Minister Starmer
UK Government Acknowledges Billionaire Exodus Amid Tax Rise Concerns
UK Budget 2025: Markets Brace as Chancellor Faces Fiscal Tightrope
UK Unveils Strategic Plan to Secure Critical Mineral Supply Chains
UK Taskforce Calls for Radical Reset of Nuclear Regulation to Cut Costs and Accelerate Build
UK Government Launches Consultation on Major Overhaul of Settlement Rules
×