Iran’s sponsorship of terrorist groups and activities has 'only increased' in the year since Tehran reached a nuclear deal with world powers, Matthew Levitt, director of the Washington Institute’s counterterrorism and intelligence program, wrote in a policy analysis published Friday.

In an address during a National Army Day parade on Sunday, Iran's President Hassan Rouhani praised Iran's role in helping Syria and Iraq, saying "if tomorrow your capitals face danger from terrorism or Zionism, the power that will give you a positive answer is the Islamic Republic of Iran."