Pence's mission came a day after the White House made public a letter Trump had sent to Erdogan on October 9 urging the Turkish leader to make a deal with the Syrian Kurdish militias that are the target of Ankara's military operation.
In the letter, which was authenticated by the White House, Trump urges his foreign counterpart to negotiate an end to Turkey's assault against USA -allied Kurdish fighters, which has drawn widespread condemnation by the global community.
"History will look upon you favorably if you get this done the right and humane way". @POTUS warns him to not "be a tough guy!" He also added, "It will look upon you as the devil if good things don't happen".
U.S. president Donald Trump tweeted that "This deal could never have been made 3 days ago". Trump repeatedly threatened Turkey with the destruction of its economy, if it did anything that Washington considers "off limits".
The letter was written on the day Turkey's military operation started.
He signed off with, "I will call you later".
Earlier on Wednesday, President Trump said the USA should not be intervening in Turkey's military operation in Syria because it is "not our border", and called the former U.S. allies the Kurds "no angels".
Turkish officials told the BBC and other news outlets Thursday that Erdogan threw the letter in the trash.
When this letter was first made public on the Twitter account of Fox Business Network reporter Trish Reagan many observers questioned whether it was for real or some kind of freakish Photoshop job.
What's more, the Republican reportedly bragged about the letter during a meeting with congressional leaders yesterday afternoon, suggesting the leak of the correspondence was a deliberate White House plan, and further suggesting that Trump has no idea how embarrassing the document is. Mr Trump said in the letter, which the White House has confirmed is real. That said, Cavusoglu made it clear that Turkey did not give America any "guarantees" on the fate of such cities as Kobani (liberated in 2015 from Islamic State by the Kurds).