Turkish President Recep Tayyip Erdogan announced during the Group of 20 summit in South Africa on Sunday that he will be talking with Russian President Vladimir Putin over the phone on Monday.

He said he would talk to the Russian leader about reviving a previous deal from July 2022 that allowed Ukraine to safely ship exports of grain via the Black Sea.

The agreement stayed in place until the following year, when Putin refused to extend it, saying that a parallel agreement promising to remove obstacles to Russian exports of food and fertilizer hadn’t been honoured.

“We had a grain corridor endeavor to open the path to peace,” Erdogan said. “Unfortunately we were only partially able to succeed. Tomorrow I will be asking Putin to revisit the endeavour.”

Erdogan's new diplomatic push comes just days after he met with Ukraine's President Volodymyr Zelenskyy in Ankara.