"The violence perpetrated against them is outrageous," Obama said. "We see it and we condemn it."
The president spoke at an East Room news conference capping his third set of meetings with German Chancellor Angela Merkel, one of several European leaders who spoke out more forcefully, more quickly than Obama on the unrest in Iran that followed the disputed June 12 elections.
"We will not forget," Merkel said.
Turning to Iraq, where a deadline for U.S. combat troops to leave all cities was just four days away, Obama offered no support for allowing a spate of recent violence to push back the withdrawal. "If you look at the overall trend, despite some of these high-profile bombings, Iraq's security situation has continued to dramatically improve," Obama said.
Of bigger concern than the violence, Obama said, is the lack of movement on laws to share oil revenues and other matters that keep Iraq deeply fractured along sectarian lines. He called on Iraqi Prime Minister Nouri al-Maliki to step up his leadership.
Merkel's visit happened to coincide with the day that a sweeping global warming bill came up for a vote in the House amid contentious partisan sniping about its effect on jobs and consumer costs. With the vote still hours away and the outcome in doubt, Obama and Merkel, who has made climate change a top priority, presented the rare sight of an American president and a visiting foreign leader together urging the U.S. Congress to act.
Obama said he had been "very blunt and frank" with Merkel that it will take significant time to turn the U.S. into a world leader on climate change but that the "critical" bill before the House was a good start.
Merkel sympathized with the difficulty of approving such legislation, which would impose the first-ever limits on greenhouse gas pollution and force a shift to cleaner energy sources. "I know what's at stake, when you talk about reduction targets, how tricky that is," Merkel said.
In Iran, the government proclaimed the incumbent hardline president, Ahmadinejad, the landslide winner of the June 12 voting over opposition leader Mir Hossein Mousavi, prompting widespread protests followed by a brutal state-led crackdown.
Ahmadinejad told Obama Thursday to "show your repentance" for criticizing Tehran's response.
"I don't take Mr. Ahmadinejad's statements seriously about apologies, particularly given the fact that the United States has gone out of its way not to interfere with the election process in Iran," Obama responded sternly.