As Israel’s ground war in Gaza escalates, there’s another conflict threatening to spill over. Israel and Hezbollah continue to exchange fire on the Lebanon border, stoking fears that a second front may open up. What is Hezbollah? Why does it present a growing threat to Israel? How could an escalating conflict between the two could spark a wider regional war? Journalist Rebecca Collard in Beirut explains. For transcripts of Front Burner, please visit: https://www.cbc.ca/radio/frontburner/transcripts Transcripts of each episode will be made available by the next workday.