Two foreign students have left Dhaka University due to security concerns following a series of crude bomb explosions on the campus in recent days.Vice-Chancellor of Dhaka University, Professor Dr. A. B. M. Obaidul Islam confirmed the news to journalists.Speaking at an event at the university's Faculty of Social Sciences on Wednesday, he said that two foreign students left the campus this morning following the unstable situation that unfolded on Tuesday."This morning, they informed me that t...