Explainer-Israel and Lebanon are expected to hold talks. What do we know?

JERUSALEM/BEIRUT, April 10 (Reuters) - Israeli and Lebanese officials are expected to meet in Washington next week as U.S. President Donald Trump seeks to calm weeks of Israeli fighting with Iran-backed Hezbollah that has threatened to derail a fragile U.S.-Iran ceasefire.Both sides are under pressure from Trump to bring about an end to the fighting, a key demand by Iran in parallel talks due this weekend in Pakistan.WHO IS FIGHTING, AND WHY?