President Trump spoke with Turkey’s president Tayyip Erdogan about their countries’ shared commitment to the fight against terrorism abroad and NATO during a phone conversation Tuesday.

The two leaders discussed the “close, long-standing relationship between the United States and Turkey and their shared commitment to combatting terrorism in all its forms,” the White House said in a statement. Turkey has been a critical ally on the front-lines in the fight against ISIS, contributing ground troops on the battlefield in Syria.