Brazilian President Luiz Inacio Lula da Silva's visit to Teheran
may be Iran's last chance to engage the world over its nuclear program before
new UN sanctions, AFP reported a senior US State Department official saying on
Lula, who has backed a diplomatic solution to the nuclear
standoff, is scheduled to visit
on May 16 and 17 amid US-led moves in the UN Security Council for sanctions
against the Islamic republic over its nuclear program.