Prince Igor of Kiev was able to mount a new naval campaign against Constantinople as early as 944/945. Under threat from an even larger force than before, the Byzantines opted for diplomatic action to circumvent invasion. They offered tribute and trade privileges to the Rus'. The Byzantine offer was discussed between Igor and his generals after they reached the banks of the Danube, eventually accepting them. The Rus'–Byzantine Treaty of 945 was ratified as a result. This established friendly relations between the two sides.