The challenge had been initiated by Tusk's conservative predecessor Mateusz Morawiecki in 2020.
Tusk told a news conference on Tuesday that the withdrawal of the challenge signified an end to "the unnecessary political dispute" surrounding the convention.
He said that the protection of women and children from violence "ought never to be a subject of political contention but rather a matter of common concern."
The convention has been signed by 45 countries and the European Union, with 34 countries having ratified it. Poland signed the convention in December 2012 and ratified it in 2015.
The Istanbul Convention, established in 2011 by the Council of Europe, is designed to protect women from all forms of violence and discrimination. It recognizes the link between violence and unequal treatment and argues that combating stereotypes and discrimination makes preventing violence more effective.
In July 2020, Morawiecki submitted a request to Poland's Constitutional Tribunal to examine the convention's compatibility with the Polish constitution.
Morawiecki claimed that the convention contradicted Poland's legal order and had an ideological basis that did not accurately define the real sources of violence against women or provide effective tools to combat domestic violence.
Also in July 2020, the justice minister at the time, Zbigniew Ziobro, filed a request to initiate the procedure for denouncing the convention. Ziobro argued that the convention's ideological layer was inconsistent with the Polish constitution and legal system.
Adam Bodnar, the ombudsman for citizens' rights at the time, called for a cessation of efforts undermining the authority of the Istanbul Convention and for halting any proceedings aimed at its denouncement by Poland. Bodnar is currently Poland's justice minister.
(rt/gs)
Source: IAR, PAP