"They will discuss Afghanistan, especially how to ensure that our embassy stays there and is safe," RIA Novosti quoted him as saying.
Sullivan also noted that the leaders will touch upon the topics of relations with Russia and China.
“Russia and Turkey have contradictions in some places,” he added.
Earlier it was reported that Biden and Erdogan intend to discuss the situation in Syria, Iran, Afghanistan, Nagorno-Karabakh and the Mediterranean.