Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Erdogan Seeks Out Trump to End Dispute on Russian Missile System Dorian Jones ISTANBUL, TURKEY - Turkish President Recep Tayyip Erdogan is looking forward to a meeting with President Donald Trump to end the escalating crisis over Ankara's procurement of Russia's S-400 missile system. The expected meeting on the sidelines of the G-20 summit in Osaka, Japan, is seen as the last chance to avoid a rupture in ties between the NATO allies. "The [presidents'] meeting is a turning point," said former senior Turkish diplomat Aydin Selcen who served in Washington. "Why, because we have a deadline, for the first time we have a delivery date by the end of July, and the sanctions from Washington are ready to kick in. They are concrete; they are ready." Erdogan is playing down the threat of sanctions. "I don't know if NATO countries began to impose sanctions on each other. I did not receive this impression during my contact with Trump," Erdogan said Wednesday to reporters before leaving for Japan. Erdogan is expecting a breakthrough with Trump. "I believe my meeting with U.S. President Trump during the G-20 summit will be important for eliminating the deadlock in our bilateral relations and strengthening our cooperation," Erdogan told the Nikkei Asian Review, in an interview published Wednesday. Washington says the advanced S-400 missile system threatens to compromise NATO defense systems, especially the United States' latest F-35 fighter jet. Ankara faces exclusion from the consortium building the F-35 along with the purchasing of the plane. The first step in U.S. sanctions over the S-400 system saw Turkish pilots removed this month from training on the advanced jet. Erdogan is banking on his relationship with Trump to end the impasse. "Yes, Mr. Erdogan is reportedly one of Mr. Trump's favorite leaders around the world," said Selcen, who is now a regional analyst. "But then on various issues what Mr. Trump says on the phone or bilateral talks, does not necessarily coincide with what happens on the ground," he added. However, Wednesday acting U.S. Secretary of Defense Mark Esper warned his Turkish counterpart, Hulusi Akar, of the consequences of the S-400 purchase. .