By Anthony Deutsch AMSTERDAM (Reuters) -The Dutch intelligence service said on Thursday it had uncovered a Russian military agent attempting to use a false identity to infiltrate the International Criminal Court (ICC) which is investigating accusations of war crimes in Ukraine. Sergey Vladimirovich Cherkasov created an elaborate cover story dating back years to try and enter the Netherlands as a Brazilian national for an internship at the Hague-based ICC in April, the agency’s head told Reuters. “This was a long-term, multi-year GRU operation that cost a lot of time, energy and money,” said Du…