Polish President Andrzej Duda said on Wednesday that he will not rest until two allies are released from jail as a spat with new Prime Minister Donald Tusk threatened to become a full-blown constitutional crisis. In extraordinary scenes on Tuesday, former interior minister Mariusz Kamiński and his ex-state secretary Maciej Wąsik were offered shelter at the presidential palace as police tried to arrest them. They were eventually taken away by police to start jail terms for corruption. The pair are from Duda’s right-wing Law and Justice party (PiS), which was ousted from power in recent election…