HUGO GREENHALGH POLAND has warned it could mount a legal challenge to the European Union's decision to withhold funding to towns accused of setting up so-called LGBT-free zones, in an escalation of a growing row over the issue. LGBT+ rights have become a divisive issue in Poland, whose ruling Law and Justice Party (PiS) says their promotion undermines traditional values. President Andrzej Duda won re-election last month having pledged to ban same-sex adoption and school lessons that included discussions about sexuality or gender identity. That has led to tensions with the EU, which last month rejected six town twinning applications…