Trump defended his decision to allow Turkey to invade Syria, tweeting that Turkey is a NATO member in good standing and is a U.S. trader. The State Department blocked the U.S. Ambassador to the EU Gordon Sondland from testifying about his role in the Trump-Ukraine scandal. Pope Francis is considering the possibility of lifting celibacy requirements for priests and a the Mars Curiosity Rover finds an ancient oasis with evidence of salt water. Yahoo Finance’s Adam Shapiro breaks down the biggest stories of the day on On the Move.