But whatever its outcome, Londonism has become a self-reinforcing ideology that will probably outlive both men's careers.
The prime minister, who warned of a "generational struggle" against a "poisonous and extremist ideology" that will last for the rest of his political lifetime, wrote: "I agree that we should avoid sending armies to fight or occupy.
Rather, its root cause is a fascist ideology that will begin to lose strength when its adherents are shown, by the implacable imposition of military force, that their defeat is inevitable, and that joining the cause can only lead to their deaths in this world, not glory in the next.
In representative democracy, the political parties present to the voters a package of proposals that promise to implement if elected, and an ideology that will guide their work as government (legislative, executive).
And news accounts last week even more dramatically revealed the Pope's judgmental side, when he suggested that unnamed funders in the developed world are conditioning their aid to needy countries by making them accept an "ideology" that will cause kids to switch genders willy-nilly.
The most important fight today is against fanaticism and extremism in all religions and ideologies, against prejudices that will bring us back to the darkness of the Middle Ages.
Perhaps most difficult of all, they have to figure out how to present a largely leftist, secular ideology in language that will appeal to a conservative, religious society.
Marx argued in The German Ideology that capitalism will end through the organised actions of an international working class: In this new society the self-alienation would end, and humans would be free to act without being bound by the labour market.
"We will find them, we will bring them to justice, and at the same time we will spread an ideology of hope and compassion that will overwhelm their ideology of hate".
