Polish researchers have begun excavating a World War II mass grave in western Ukraine, opening a new and emotionally charged chapter in a dispute that has shadowed Polish-Ukrainian relations for years.

According to NOS, the site is in Puźniki, a village near Ternopil that no longer exists. The graves are believed to contain victims of the Volhynia massacres, when Ukrainian nationalists killed an estimated 100,000 mostly Polish civilians during the war.

The excavation is significant not only because of the historical trauma attached to the site, but because it could finally help identify remains that have been buried for decades without proper attribution. The report says about 80 victims are expected to be in the grave, and the aim is to recover the bodies, identify them and provide a final resting place.

The issue has long been politically fraught. NOS describes it as a source of friction between Poland and Ukraine, even though the two countries have since become close partners in the face of Russia’s full-scale invasion. That wartime alliance has made the historical controversy more visible, not less.

For Poland, the exhumations are likely to be seen as a matter of memory, dignity and national responsibility toward victims whose fate was never fully documented. For Ukraine, the work is delicate because it touches on painful chapters of its own history and on relations with a neighbor it now depends on for security and support.

The report says Warsaw and Kyiv hope the excavations can move them toward a shared resolution. That wording matters: it suggests the effort is being treated not as an academic exercise alone, but as a diplomatic gesture with the potential to lower tensions.

The historical background is severe. The Volhynia massacres remain one of the most painful episodes in Polish collective memory, and any attempt to revisit them can reopen arguments over responsibility, commemoration and the scale of violence. Even so, the recovery of remains is often the first practical step toward any fuller reckoning.

What makes Puźniki especially important is that it offers both symbolic and forensic value. If investigators can identify the dead, families and communities may gain some closure. If they cannot, the excavation will still stand as a sign that the work of historical recovery has resumed after years of blockage.

The packet provides no evidence of a finalized political settlement. What it does show is a cautious but meaningful shift: researchers are on site, the excavation has begun and both governments appear willing to frame the work as a bridge rather than a provocation.