Muslim protestors launched more attacks on a U.S. embassy Thursday, this time in Yemen. Reports say protestors stormed the consulate overnight, chanting "death to America."
Witnesses say security forces responded by opening fire on the demonstrators. While the mob briefly entered the compound, no one was hurt.
Unrest is also mounting in Egypt, with angry protestors filling the streets.
Police fired tear gas and rubber bullets into the crowd to keep them away from the U.S. Embassy.
Libya Attack Coordinated?
Meanwhile, the United States is responding to the attack in Libya, which claimed the life of U.S. Ambassador Chris Stevens and three other Americans.
"He risked his life to stop a tyrant, then gave his life trying to help build a better Libya," Secretary of State Hillary Clinton said of Stevens.
Following Tuesday's attack, the U.S. Navy positioned a destroyer off the coast of Libya and another is on its way. Dozens of Marines are now on the ground protecting the embassy there.
New information about Tuesday's deadly attack in Benghazi suggests the attack was not just from an angry mob but a planned assault.
A terrorist group with ties to al Qaeda has claimed responsibility. Officials say it was a well-coordinated attack timed to coincide with the 9/11 anniversary.
It took place just one day after al Qaeda leader Ayman al Zawahiri called on Libyans to rise up against the Americans.
President Obama spoke with the leaders of both Libya and Egypt following the attacks, urging them to work with the United States to ensure the safety of its diplomats.
Obama also offered his condolences to the friends and families of Stevens and the other victims and promised that the killers would be brought to justice.
"As Americans, we stand united, all of us, in gratitude for their service," Obama said. "I want to assure you we will bring their killers to justice."
On Thursday, protestors in Libya filled the streets in support of the United States, condemning the attack on the U.S. consulate.
Political Hot Button
Meanwhile, the violence in the Mideast is becoming a political issue.
GOP presidential nominee Mitt Romney criticized the president's Mideast foreign policy, saying the White House has not provided leadership in the region.
He also attacked a statement from the U.S. Embassy in Cairo condemning people who "hurt the religious feelings of Muslims."
"The administration was wrong to a stand by a statement sympathizing with those who had breached our embassy in Egypt, instead of condemning their actions," Romney said.
The president lashed out at him for that statement, saying the press release was issued before any of the attacks took place.
"Gov. Romney seems to have a tendency to shoot first and aim later," Obama said. "And as president, one of the things I've learned is you can't do that."
The Romney camp pointed out that the embassy reissued support for that statement after the attacks began.
History of Violence
Muslims have responded violently in the past over insults to their faith.
Earlier this year six people were killed in Afghanistan when soldiers allegedly disposed of Korans improperly at a U.S. airbase in Kabul.
And in 2004, a Dutch filmmaker was killed after producing a film criticizing the Muslim's treatment of women.