Iranian President Mahmoud Ahmadinejad shored up opposition to a U.S. drive to curb his country's nuclear program as he began a two-day visit to Venezuela.
Ahmadinejad's first trip to the South American nation highlighted Iran's backing for the fellow OPEC country's bid for a U.N. Security Council seat that Venezuelan President Hugo Chavez would use to challenge Washington's campaign for international sanctions against Tehran.
