You need to use scholarly materials for this assignment. However, due to the lengthy nature of scholarly publishing, you won't find peer-reviewed articles about an event that happened within the last 6 months. You will, however, find supporting and contextual information--if you know where and how to look.
When an event happens, information about the event enters the Information Lifecycle at different points in time, depending on the medium in which it is published.
(image source: Erin Fields at UBC Library)
Day 1: Event occurs, and information is reported online, on TV, and on the radio.
Day 2-3: Journalists publish newspaper articles.
Day 3-14: Journalists publish more in-depth articles in magazines and popular journals.
Months: Academic experts analyze and research the event, and write scholarly articles using their research. These articles are then vetted for publication via the peer-review process, which can take many months as multiple versions may be reviewed and edited before they are suitable for publication. For more information about the peer-review process, watch the video at the link below.
Years: The process of turning research into a book is lengthy. Scholars conduct extensive research and analyze the event's significance and situation within established theoretical frameworks. Multiple versions of the text will be edited, often with a team of editors and researchers. Before the book is available to the public, it must be published and marketed, a process that can take months.
(Adapted from UBC's guide to Evaluating Information Sources)