President Trump met with Turkish President Tayyip Erdogan Tuesday at the White House amid tensions over the US decision to arm Kurdish fighters in Syria, which angered Ankara, a crucial partner in the US-led coalition against Islamic State forces. 'It is a great honor to have President Erdogan from Turkey here,' Trump said. 'We're going to have long and hard discussions, I know that they will be very successful. We've had a great relationship and we'll make it even better.