Growing tensions between the new Polish government and some of the country's key institutions that are still loyal to the former administration will fuel political instability in Poland and threaten Warsaw's plans to unlock billions of euros in frozen EU funds. Since Poland's new centrist, pro-EU government coalition took office last December, the country has been experiencing growing levels of political and institutional turbulence. The new administration led by Prime Minister Donald Tusk has begun work to dismantle its predecessor Law and Justice (PiS) party's deeply embedded influence over the country's economy, media and courts following eight years of rule, including by removing PiS loyalists from key institutions and state-owned organizations and by enacting reforms to restore the independence of the judiciary. But these efforts have quickly run into a series of roadblocks posed by the now opposition PiS in the form of resistance from PiS ally President Andrzej Duda,...