DUBAI, March 11 (Reuters) - Iran has reached a deal to buy advanced Su-35 fighter planes from Russia, Iranian state media said on Saturday, expanding a relationship that has seen Iranian-built drones used in Russia's war on Ukraine. "The Sukhoi-35 fighter planes are technically acceptable to Iran and Iran has finalised a contract for their purchase," the broadcaster IRIB quoted Iran's mission to the United Nations in New York as saying. See here for a complete list of exchanges and delays