A furious spat has erupted between Weil Gotshal & Manges’ management team and ex-rainmaking partner Dennis Block, over the firm’s international strategy.

In an unprecedented letter to New York magazine, management at the US firm rubbished Block’s claims, made in an earlier article, that he had left because he did not agree with Weil Gotshal’s foreign offices – including London – sucking profits away from New York.