In 1104, his city of Minsk was under siege from the voivode Putiata, Oleg Sviatoslavich, and Yaropolk Vladimirovich, the son of Vladimir II Monomakh.

Gleb started negotiations with Vladimir who in spirit of the upcoming Easter holidays agreed to conclude a peace.

Completely ignoring the conditions of the signed peace treaty, Gleb resumed his hostilities in 1119.

The same year, Mstislav Vladimirovich, the son of Monomakh, took Gleb as a prisoner to Kiev where the last one died shortly.

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