NATO leaders only talk about fighting terrorism; they do not act, Turkish President Recep Tayyip Erdoğan said. Erdoğan urged fellow Nato allies to take Turkey's security concerns "seriously" just as Turkey takes threats to the alliance seriously. Speaking to reporters in London after a NATO summit, where the leaders of Turkey, France, Germany and Britain held separate talks on Syria, Erdogan said the four leaders would meet again in Istanbul in February. He said all four leaders had agreed to hold talks at least once a year from now on. Turkey approved a NATO defence plan for the Baltics and Poland after some allies demanded support, Erdoğan added. Erdogan said ahead of the summit that Ankara would block the plan until allies recognised groups that Turkey deems terrorist organisations. NATO Secretary-General Jens Stoltenberg said at the end of the summit that allies had not discussed the YPG and that Turkey had lifted its block on the plan.