Former air force commander wins Bulgaria presidential election - exit polls

By Tsvetelia Tsolova and Angel Krasimirov SOFIA (Reuters) - Bulgarian Socialist ally Rumen Radev, a Russia-friendly newcomer to politics, won Sunday's presidential election by a large margin, exit polls showed, possibly paving the way for months of political instability in the small Black Sea state. A former air force commander, Radev campaigned on strong anti-migrant rhetoric and an argument that it was in the country's interest to find a balance between the requirements of its European Union m