Complex sentence: Haiti wasn't invited to the talks, since Venezuela did not recognize its US-installed government, however, Chavez has more recently discussed the possibility of Haiti's entry into the project with president-elect René Préval.
Split into simpler sentences: Haiti wasn't invited to the talks, since Venezuela did not recognize its US-installed government. More recently, however, Chavez has discussed the possibility of Haiti's entry into the project with president-elect René Préval.