"They are not living up to the spirit of the agreement, I can tell you that", Trump said of the Iranians, though he did not mention any specific violations.
The US and Italy had some USD62 billion in trade previous year, with the US trade deficit with Italy standing at USD28 billion.
"We don't know whether or not they're able to do that, but I have absolute confidence that he will be trying very, very hard", Trump said, referring to Chinese President Xi Jinping.
Trump called Italy a "key partner" in the fight against terrorism, noting it is the second largest contributor of troops to Iraq and Afghanistan, and praised it for its efforts to stabilize Libya.
Trump has pulled the United States out of the Trans-Pacific Partnership, a pact he said was "a disaster".
President Donald Trump says the 100-day benchmark often used to measure a new administration's achievements is a "ridiculous standard". "A divided country and in conflict would make civility worse. We have a role everywhere", Trump said.
"We're doing very well on health care", Trump said Thursday, promising it "will be a great plan".
"We are effectively ridding the world of ISIS".
Obama also had criticized North Atlantic Treaty Organisation members for not meeting their defense spending obligations, although he didn't press the issue as much as Trump.
Trump has berated countries that fail to meet the North Atlantic Treaty Organization's guideline for each country's defense budget - 2 percent of gross domestic product.
Gentiloni said partitioning the country would have unsafe consequences for Egypt and Tunisia as well as Europe. "We are being very effective in that regard", he asserted.
White House spokesman Sean Spicer said Wednesday that the White House would be reaching out to the Vatican to "see if a meeting, an audience with the Pope can be accommodated". "Will have a big effect on presidential election!" he tweeted.
President Donald Trump has said he does not see a role for the United States in Libya apart from defeating the Islamic State terror group.
"We need a stable and unified Libya", the Italian PM said, noting that US Special Forces had taken part in defeating Islamic State (IS, formerly ISIS/ISIL) in the port city of Sirte, but that solving the problem of migrants crossing the Mediterranean to Italy and beyond would require nation-building. "We want to see it".