 Complete the following phrase:  Răducanu Cantacuzino took over as Wallachian military commander shortly after his brothers death, having been recognized as such by Nikolai Vasilyeich Repnin. A new Ottoman-appointed Prince, Emanuel Giani Ruset, tried to occupy Bucharest at various intervals from January 1770, ultimately succeeding in June, when the Russians operated a strategic retreat; in August, a large-scale 