Turkish security forces launched a major operation on Tuesday, arresting 357 individuals suspected of links to the Islamic State network across 21 provinces. The crackdown followed a deadly clash in Yalova, where three police officers and six suspected members of the group were killed. Authorities intensified their efforts after intelligence suggested planned attacks during the holiday season, leading to a series of arrests in Istanbul and Malatya. Turkey, which has faced multiple attacks from the group in recent years, continues to target suspected members and disrupt potential plots.