Corbyn, like so many on the far Left, does not fear Russia. Nor does he care that UKIP and the French National Front defend Putin because they admire a regime that loathes the European Union as much as they do. The far left has never been comfortable with the EU either. However, it indulges Putin because, as Corbyn explained in the old Communist daily, the Morning Star, “the EU and Nato have now become the tools of US policy in Europe”. From this, it follows that all attempts by the former occupied nations of Europe to protect themselves from their old imperial master are American-backed provocations which goad a justly affronted Russia. Or as Corbyn put it, “The expansion of Nato into Poland and the Czech Republic has particularly increased tensions with Russia.”

We have a politician at the forefront of one of Europe’s great parties telling Poles that their country has no right to defend itself against an expansionist Russia. The man I suppose I now have to call the leader of the British Left is defending a classically reactionary power. Those who have kept their eyes open won’t be shocked. Opposition to the West is the first, last and only foreign policy priority of many on the Left. It accounts for its disorientating alliances with movements any 20th-century socialist would have no trouble in labelling as extreme right-wing.

Not just Corbyn and his supporters but much of the liberal Left announce their political correctness and seize on the smallest sexist or racist “gaffe” of their opponents. Without pausing for breath, they move on to defend radical Islamist movements which believe in the subjugation of women and the murder of homosexuals. They will denounce the anti-Semitism of white neo-Nazis, but justify Islamist anti-Semites who actually murder Jews in Copenhagen and Paris. In a telling vignette, Corbyn himself defended a vicar from the supposedly liberal and tolerant Church of England who had promoted the conspiracy theory that Jews were responsible for the 9/11 attacks. Opponents who called for the church authorities to discipline him were not anti-racists fighting an ideology that had led to the murder of millions. On the contrary, said Corbyn, the vicar was the victim, “under attack” because he had “dared to speak out against Zionism”.

When the far Left shades into the far Right, I am tempted to hug the centre and treat it as our best protection against the poisonous and the deranged. Respectable commentators have urged Labour members to do the same. They failed to understand that in Labour’s case the centre ground is as polluted as any derelict site.

Whenever I argue with Labour people about Corbyn’s record of support for repressive and reactionary movements,  most find comfort in “whataboutery”. What about the West’s support for Saudi Arabia? What about Palestine? I reply that they ought to defend universal human rights and support a just settlement for Palestinians, while fighting radical Islam at home and abroad, by condemning Saudi Arabia in one breath and Russia in the next. But few are convinced. Now that may be because they are so certain of their righteousness they cannot see a double standard when it is staring them in the face. Perhaps they are the left-wing version of UKIP’s little Englanders, who do not care how Venezuelans, Russians, Cubans, Ukrainians and Syrians are treated.