The pose struck by Turkish, Russian and Iranian leaders who met in Sochi to discuss Syria last week revealed a historic moment.

What rendered the shot of leaders so important was, undoubtedly, the U.S.'s exclusion from the frame, which says a lot about the future of the region.

Soon after this trilateral meeting, U.S. President Donald Trump announced on his Twitter account that he would call President Recep Tayyip Erdoğan, and he did.

Both parties made positive statements after the phone conversation. Reportedly, Trump assured Erdoğan that the U.S. would no longer provide weapons to the outlawed PKK's Syrian affiliate Democratic Union Party's (PYD) People's Protection Units (YPG) terrorists in Syria.

However, the Pentagon came into play while the U.S. strove to eliminate Ankara's concerns, as the only reliable player that the U.S. can have as an interlocutor in the region.

The U.S. Defense Department announced that it would continue to stand by the Syrian Democratic Forces (SDF), which includes YPG elements.

Should we worry about the confession of a country that claims to be at the forefront of the fight against global counterterrorism, of its cooperation with terrorists in the Middle East or about the Defense Department's denial of the president and damning of the U.S.'s seriousness and reliability?

We do not know whether Trump could react to the Pentagon about this duality. Nothing has been seen in the press yet, except for the Pentagon's slight maneuver.

However, statements from U.S. Secretary of State Rex Tillerson, whom we know to have more common sense, at a meeting in Washington on Tuesday, revealed that the Trump administration still cannot understand the gravity of the situation.

In fact, Tillerson was speaking as though it had not been the Pentagon that announced that they support terrorists who have waged war on their ally, Turkey, and that they have provided arms to them so far.

He said: "We ask Turkey as a NATO ally to prioritize the common defense of its treaty allies. Iran and Russia cannot offer the Turkish people the economic and political benefits that membership in the Western community of nations can provide."

Tillerson should know that what is more important for Turkey now is whether this bloc of Russia, Iran and Turkey, will harm Turkey as much as the U.S. or NATO, which it calls its allies, rather than whether it will benefit Turkey.

Unfortunately, it seems Ankara's one-sided efforts to keep dialogue channels open despite Washington's scandalous explanations will not work.

If the U.S. administration is really concerned about the emotional breakaway of Turkey, it should take one more step. Trump should make the Pentagon clearly and strongly reiterate his pledge to Erdoğan that they will not send arms to terrorists, without dancing around it. Then, he should set a certain schedule for the Pentagon's perspective of recalling the heavy weapons provided to terrorists in the long run, and should not extend the timeline. They provided these weapons on the excuse of Daesh's presence. The danger is over now that Daesh terrorists abandoned Syrian cities under the control of the U.S., PKK and YPG as happened in Raqqa. At least there is no need for the U.S. to take the risk of spending taxpayers' money on secular terrorists, of course, if they do not really aim to besiege Turkey by proxy as Russia and Iran say.