Mironov reported from the Russian republic of Chechnya during both wars of 1994 and 1999, and also worked in Afghanistan. He initiated and organised a series of confidential meetings between Russian and Chechen politicians in western Europe with a view to finding a political solution to the Russo-Chechen conflict through the mediation of European diplomats. Throughout his career, Mironov worked with foreign journalists including correspondents of numerous American and European media outlets, covering war and injustice. He had a long-standing friendship and fruitful collaboration with an Italian filmmaker . Andrei worked as a fixer/producer on a number of Fornoni's documentaries including a film on "Siberian" anthrax.