Under sanctions pressure, Iran’s leader looks to friends in Latin America for support

CARACAS, Venezuela — Iranian President Mahmoud Ahmadinejad is courting Latin America on a four-nation tour starting Sunday that will let him tout some of Iran’s few friendships while tensions grow over the country’s threats to block oil shipments in retaliation for tighter U.S. sanctions. His government finds itself largely isolated in the standoff over its nuclear program, and the new sanctions