Pompeo called to "reiterate U.S. opposition to the continued level of weapons and munitions being brought into the country."
The presidents of Russia and Turkey said they reached agreement on a cease-fire to begin at midnight Thursday.
Sailors aboard the USS Ross this week saved three mariners from a burning Turkish civilian vessel near the Black Sea.
The fighters were among at least eight Hezbollah members who died in Turkish attacks.
NATO called on Syria and Russia to halt their airstrikes following the killing of 33 Turkish soldiers in northeastern Syria.
Russian air strikes has forced nearly one million civilians to flee northwest Syria.
French President Emmanuel Macron on Wednesday accused Turkey of breaching an agreement to halt foreign interference in Libya.
Libya has been divided between two competing governments since 2015.
The Tripoli-based government of Libyan Prime Minister Fayez Sarraj has faced an offensive by the rival regime in the east.
In recent years, some Turkish officials have cited Ottoman history to reassert Turkish rights across the Mediterranean.
The campaign of President Donald Trump released a letter from 235 retired senior officers backing his re-election.
The news comes four years after the Air Force laid out initial plans for what its future fighter jets might look like.
The recent exercises were one of many the Air Force is conducting to test its Advanced Battle Management System.
A veteran of the Marine Corps and Army National Guard, he went through boot camp more than four decades ago.
Cmdr. Robert Arias is at least the third Navy commander removed from his job in recent weeks.