This is a sentence from Bertrand Russell' work. Notice that the sub-clauses following both ... and ... do not exactly match. I wonder if Russell made a grammatical mistake here.
I was impressed by the facts both that China had been able to settle all her other border disputes by negotiation and had already, before this last and disastrous flare-up, offered to negotiate with India the border questions which were in dispute between them.
Source: Russell, Bertrand. Unarmed Victory. New York: Simon And Schuster, 1963. 102. Print.