Original: After a short break in the fighting in 1976 due to Arab League mediation and Syrian intervention, Palestinian-Lebanese strife continued, with fighting primarily focused in south Lebanon, occupied first by the PLO, then occupied by Israel.
Simplified: After a short break in the fighting in 1976 due to Arab League mediation and Syrian intervention, civil strife continued, with fighting primarily focused in south Lebanon, occupied first by the PLO, then occupied by Israel.