Kerry held talks with Putin and Lavrov on Tuesday / Photo from Kerry's twitter @JohnKerry

"Had frank discussions with President #Putin & [Foreign Minister] FM #Lavrov on key issues including #IranTalks, #Syria, #Ukraine," Kerry tweeted after talks with the Russian high-ranking officials.

He also stressed it is important to keep lines of communication between the U.S. and Russia open as the sides address pressing global issues.