The moral and political system used by Western politicians

What are morals?

They are rules of behaviour consisting of rights and responsibilities originating from religion, though atheists and nihilists (who pride themselves in having no moral principles) refuse to acknowledge this.

What is morality?

Morality is a system of moral rules.

What are moral systems?

They include secular political ideologies as well as religions. In the West, Liberalism is now the operating political orthodoxy that trumps religious principles. Interestingly, President Putin declared in 2019 that liberalism was "obsolete" which, surprisingly, did not generate any political debate at all. Those who dissented from liberalism already agreed, and those in the Western liberal establishment did not want its obsolescence discussed or acknowledged.

It is interesting that George Soros identifies as liberal.

Can liberal principles be stated and agreed on by those who identify as liberal (but who are really nihilists)?

Unlike revealed scripture, there is no official handbook to liberalism nor can liberals define liberalism or state agreed principles. 

It is already well known that liberalism is whatever whoever is leader of a political party says it is, and we already know what to think of Western political leaders.