Secretary of State Hillary Clinton denied that Washington was warned of an imminent attack in Libya, stressing the United States would not rest until those behind the killings of four Americans are brought to justice.
Furious protesters targeted symbols of US influence in cities across the Muslim world on Friday, attacking embassies, schools and restaurants in retaliation for a film that mocks Islam.
Republicans and Democrats alike came down hard on Mitt Romney Wednesday for an act of political opportunism when the White House hopeful said the Obama administration "sympathized" with attackers in Egypt.
Whistle-blowing website WikiLeaks declared on Wednesday that the United States had effectively given groups an opening to attack its embassies by supporting the siege of its founder Julian Assange.
Demonstrators stormed the US embassy in Yemen, leading to clashes in which four people were killed, while protesters stoned Washington's mission in Cairo as anger spread over a US-produced film mocking Islam.
Egypt is neither an ally nor an enemy of the United States, President Barack Obama said Wednesday in the wake of a violent protest at the US embassy in Cairo.
Iran hit out at Canada's decision to break off diplomatic ties, with foreign ministry spokesman Ramin Mehmanparast accusing the Canadian government of being "under the influence of the Zionist regime."
Ecuador repeated demands Thursday that Britain grant safe passage to Wikileaks founder Julian Assange, who is holed up in Quito's London embassy in a bid to avoid extradition to Sweden.
German far-left MP Sevim Dagdelen on Sunday visited Julian Asange, who has been holed up at Ecuador's embassy in London since June, and afterwards expressed her solidarity with the Wikileaks founder.
British police accidentally let slip their plans to arrest Julian Assange should he leave the Ecuadoran embassy in London, with pictures of their notes appearing in newspapers Saturday.
Mexican federal police shot at a US diplomatic car as they chased criminals south of Mexico City on Friday, in a chaotic incident that left two US embassy employees wounded.