Brendan Smalowski, Pool, Associated Press
U.S. Secretary of State John Kerry, left, and Egyptian Foreign Minister Sameh Hassan Shoukry speak to journalists before a meeting at a hotel in Cairo, Egypt Sunday, June 22, 2014. Kerry arrived Sunday in the Egyptian capital to meet with Egyptian officials including President Abdel-Fattah el-Sissi in the highest-level American outreach since he took office. The United States is moving forward with attempts to thaw relations with Egypt that have cooled over concerns that the government in Cairo has conducted sham trials, imprisoned journalists and issued a violent crackdown on its political enemies.

CAIRO — U.S. Secretary of State John Kerry is discouraging Arab nations from sending financial support to even moderate opposition Sunni groups in Syria.

He fears the aid could be used to help the growing insurgency in Iraq.

Kerry says he delivered that message to Egyptian President Abdel-Fattah el-Sissi during their meeting Sunday in Cairo.

Kerry says he plans to make the same case to other leaders in Sunni-dominated Arab states over the next several days.

Kerry says the region's security is facing a critical moment as the Islamic State of Iraq and the Levant gains ground in Iraq.

The group has taken over parts of Syria in what is rapidly deteriorating into a cross-border war.

He'll urge Arab states to work together to defeat the group.