Cancellations of drills have been attributed to constraints related to the Iran war. South Korea has stated this as the reason. The country has provided this information, offering insight into the circumstances surrounding the cancellations.

Further details about the situation are available from the source. The information provided by South Korea sheds light on the factors that led to the decision to cancel the drills. The source publication has more information on this matter, for those seeking additional context or clarification.