As Nehru became a vital link between India and the LAI, Chatto operated in the background from Berlin. But how did Berlin become the centre of the Indian freedom movement in exile? In Weimar-era Berlin, he associated frequently with international anarchists and communists, but remained dedicated to the Indian freedom struggle. Located in the Halensee area of the Charlottenburg district of Berlin, the INSIB provided assistance to Indians seeking to come to Berlin. For 15 years, Berlin had been at the centre of the Indian freedom struggle in exile.