How did Hezbollah get involved in the 2023 Hamas-Israel conflict?

Following the outbreak of war between Hamas and Israel on October 7, 2023, Hezbollah strategically entered the conflict by launching attacks from Lebanon's southern border. This intervention was deliberately designed to support Hamas in Gaza and threaten Israel on a second front, effectively creating a two-front war situation. The initial impact was significant, forcing tens of thousands of Israelis to evacuate from northern towns and villages. Israel responded with counterattacks across the border, which displaced approximately 90,000 people in southern Lebanon. This escalation, combined with Israeli strikes on Iranian proxies and military officials, ultimately provoked Iran to launch its first-ever direct strike against Israel.