A handout picture provided by the office of Iran's Supreme Leader on May 9, 2018 shows Ayatollah Ali Khamenei waving to the crowd as he delivers a speech during meeting with students a day after the US president announced the US is pulling out of the nuclear deal. Iran finds itself in a tricky balancing act as it weighs a response to US President Donald Trump's decision to pull out of a landmark nuclear deal. "They need to find a response that keeps the Europeans on their side but also shows the