 On the eve of the invasion, 17July 1512, Ferdinand had a forged draft copy of the Treaty of Blois, signed on 18July, circulated.This aimed to smear both parties.The Papal ruling "Pastor Ille Caelestis" issued on 21July, just three days after the start of the invasion, authorized Ferdinand to wage war on Church enemies and to claim their lands and subjects providing they lie outside Italy, which would apply to Louis XII's France and the "heretic" crown of Navarre.