The issue of immigration has been central to the Brexit debate. Unfortunately, some on the left have pandered to anti-immigration sentiments. Marxists must call for workers’ unity, organisation, and internationalism.

One hundred years ago Europe was in the middle of a bloody world war. With tensions rising in the Middle East, the Korean peninsula, and the South China Sea – and given whose fingers are on red buttons all over the world – should we be worried about the possibility of a similar situation today?

We publish here two pieces written by Leon Trotsky – in 1917 and 1923 respectively – on the question of the “United States of Europe”. As Trotsky stresses, the only way forward for the working class of Europe is along the lines of a European-wide socialist revolution. As the capitalist European project unravels today, Trotsky’s analysis remains as relevant as ever.