Saudi Arabia's top diplomat has told visiting EU foreign policy chief that Iran is still showing "hostility" toward countries in the region, following a landmark deal on curbing Tehran's nuclear program earlier this month.

Adel al-Jubeir spoke Monday after talks with EU's Federica Mogherini who was in the kingdom to assuage its concerns over the nuclear deal she helped broker.

Al-Jubeir says Saudi Arabia rejects Iran's words and actions — a veiled reference to Iran's Supreme Leader Ayatollah Ali Khamenei's statement that the deal won't sway his country's support for the Lebanese Hezbollah group, Syria's government and Shiites in Bahrain and Yemen.

Mogherini, who heads to Tehran on Tuesday, is also pushing for a political solution to the conflict in Yemen, where Saudi-led airstrikes are targeting the Iran-backed Shiite rebels.