I'm sorry you're ugly

"US President Barack Obama sent Afghan President Hamid Karzai a letter of apology over the burning of copies of the Koran overseen by a US officer at a US military base, Karzai's office said Thursday."

"Two American soldiers also died when an Afghan army colleague turned his weapon on them as demonstrators approached a US base in eastern Nangarhar province Thursday, the military and officials said.
"As the protesters approached the American base here an ANA (Afghan) soldier in the base opened fire on American soldiers, killing two soldiers," said the district chief of Khogyani in eastern Nangarhar province, Mohammad Hassan.
The shooter then escaped among the crowd while two protesters were killed and six wounded as the foreign soldiers returned fire, Hassan said.
NATO's US-led International Security Assistance force had announced the deaths of two soldiers at the hands of a man in Afghan army uniform, without identifying their nationalities.
The attack came just hours after Taliban insurgents urged Afghans to kill foreign troops to avenge the burning of the Korans.
Afghanistan is a deeply religious country where slights against Islam have frequently provoked violent protests, and many Afghans are incensed at the discovery of charred Korans at the Bagram base."

Well, that's alright then. No reason to expect Karzi to apologize to America for the irrational violence of his soldiers.