WASHINGTON -- The G8 Summit in Italy is in full swing -- global security, international trade, and global warming are all on the table.
Leaders of the world's most powerful nations are calling on Iran to focus its nuclear technology on energy, not weapons.
And the "Great-Eight" nations will be joined by the so-called G5 -- fast developing countries like Brazil, China and India.
The White House says it's counting on Brazil to help convince Iran to keep its nuclear technology peaceful.
President Barack Obama met with Brazilian President Luiz Inácio Lula Da Silva on Thursday and emphasized the nation's close trading relationship with Iran as an opportunity to reiterate the G8's stance.
The G8 stopped short, however, of supporting sanctions against Iran, which attracted world attention for the government violence that ensued after its recent presidential election.
"It's very important for the world community to speak to countries like Iran and North Korea and encourage them to take a path that does not result in a nuclear arms race in places like the Middle East," Obama said at the Summit.
On Thursday, Obama chairs climate change discussions.
G8 nations have already agreed to limit global warming to 3.6 degrees fahrenheit and to cut greenhouse gas emissions by 50 to 80 percent by mid-century.
But major polluters China and India have rejected calls to the do the same.
Meanwhile, world leaders have agreed the global economy is still too shaky to begin rolling back stimulus funds.
Poorer countries say they've been damaged as developed nations hit hard by the recession turned to protectionist trade policies.
In a statement, the G5 said:
"We are concerned with the present state of the world economy, which submits the developing countries to an inordinate burden resulting from a crisis they did not initiate."
Smaller countries also complain the G8 hasn't delivered on promises of aid.
"We'll be working with the developing countries between now and then to try to firm up commitments," Mike Froman, Deputy National Security Advisor, said of the smaller countries' concerns.
The Summit wraps up Friday, but before President Obama leaves, he'll travel to the Vatican to meet with Pope Benedict -- a meeting he calls a "great honor."
The First Family then travels to Africa.