The Paris and San Bernardino attacks in autumn 2015, along with various retaliatory incidents, and Donald Trump's suggestion that Muslims should be banned from entering the US, have reminded us again of the deep misunderstandings and resentments that often exist between the Muslim and Western worlds. In order to improve intercultural and interreligious understanding, students at the University of Sousse, Tunisia, took part in an online exchange programme with students from Villanova University in Pennsylvania, USA. Using student diaries and end of course reflection exercises, this study investigated both the benefits and limits that the exchange had in developing understanding, as well as the impact the process had on the outcomes. The findings showed numerous positive developments in intercultural and interreligious understanding, but also limits to the depth of discussion, particularly concerning conflict situations. The diaries also revealed some cases of limited communication, which undermined some of the benefits of the exchange. [For the complete volume, see ED571330.]