RIO DE JANERIO President Recep Tayyip Erdoğan has called on NATO to focus on Russia's recent amendments to its nuclear policy. Speaking at a press conference during the G20 summit in Rio de Janeiro, Brazil, Erdoğan emphasized the dangers of nuclear weapon usage in warfare. "There is no positive aspect to conflicts involving nuclear arms. NATO officials must consider Russia's actions and reassess them," he said. Erdoğan pointed out that Ukraine's recent long range missile usage after the U.S.