Ankara: In retaliation to America\u2019s sanctions over the acquisition of the S-400 air defense system from Russia, Turkey may expel the US from Incirlik airbase. \n\n\n\n\u201cWe will assess the\nworst-case scenario and make a decision. If the US imposes sanctions against\nTurkey, then the issue of the Incirlik and Kurecik bases may be on the agenda,\u201d\nsaid Turkish Foreign Minister Mevlut Cavusoglu. \n\n\n\nMevlut Cavusoglu added that Ankara will not support NATO\u2019s plan to protect the Baltic states until the alliance adopts a plan to protect Turkey from terrorist threats.\n\n\n\nThe US is hosted at\nKurecik and Incirlik airbases. Incirlik is seen as particularly important to\nthe US, both because it is used in the Syrian War, and is believed to be\nhosting a number of US nuclear weapons.\n\n\n\nDeliveries of the latest Russian-made S-400 air defense systems, which caused a significant rift in relations between Turkey and the United States, began in July. According to Turkish President Recep Tayyip Erdogan, the S-400 will be fully operational in April 2020.\n\n\n\nWashington demanded that Turkey cancel any deliveries of the Russian-made systems over fears that they are incompatible with NATO security standards and might compromise the operation of US F-35 fighter jets. Turkey has insisted that it will continue to accept the delivery of the S-400 systems.\n\n\n\nThe delivery of the F-35 stealth combat jets to Turkey was blocked by the US when Russia completed the first shipment of S-400 components in late July 2019. The second round of the deliveries was finalized in late September, ahead of schedule.