 Complete the following phrase:  However, the Treaty of Hadiach was never implemented. Following its signing, a massive Russian army according to some sources up to 150,000 soldiers; about 100,000 of them were occupied by the siege of Konotop, the rest were massacred by Tatars when trying to follow after Vyhovskys cossacks, resulting in 20 000-30 000 lost among the Russians led by the Muscovy boyar Aleksei Trubetskoi crossed into Ukraine. In response, Vyhovsky led 60,000 Cossacks against the Russians alongside his Polish and 40,000 Tatar allies. Near Konotop, the Russians were 