Russia extends $ 2.2 billion in credit to Venezuela to finance arms purchases . Secretary of State Hillary Clinton worries about arms race in South America . Comment: Washington worries about Hugo Chavez 's deepening ties to Iran as well .
Russia extends $ 2.2 billion in credit to Venezuela to finance arms purchases . Secretary of State Hillary Clinton worries about arms race in South America . Relations tense between Venezuela and neighboring Colombia , a U.S. ally . Washington worries about Hugo Chavez 's deepening ties to Iran as well .