Igor was able to mount a new naval campaign against Constantinople as early as 944/945.[7] 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'.[8][9][10] The Byzantine offer was discussed between Igor and his generals after they reached the banks of the Danube, eventually accepting them.[11] The Rus'–Byzantine Treaty of 945 was ratified as a result.[12] This established friendly relations between the two sides.[13]