Karl Vick reports: The fall of Iraq’s second largest city to Islamist extremists Tuesday sends an alarming message about the deterioration of a country where the United States spent eight years, 4,500 lives and $1.7 trillion. Mosul, a city of 1.8 million located in the far north of the country, long cultivated a reputation as a military town. But Iraqi soldiers threw down their guns and stripped off their uniforms as the insurgents approached on Tuesday, according to officials stunned by the collapse of its defenses.

“When the battle got tough in the city of Mosul, the troops dropped their weapons and abandoned their posts, making it an easy prey for the terrorists,” Osama Nuajaifi, the speaker of Iraq’s parliament who hails from Mosul, said during a news conference in Baghdad. “Everything is fallen. It’s a crisis. Having these terrorist groups control a city in the heart of Iraq threatens not only Iraq but the entire region.”

The fall of Mosul after only four days of fighting speaks volumes about both the state of Iraqi forces and the depth of the sectarian division at the bleeding heart of the nation’s ongoing crisis: The population of Mosul is mostly Sunni, and the central government led by prime minister Nouri al-Maliki is widely criticized as favoring the country’s Shiite majority. Al-Maliki is likely to remain in office after the April 30 elections left him with the largest share of votes and negotiating chiefly with other Shiite parties to form a new governing coalition.

The insurgents—who raised black flags over parts of the city Tuesday—are Sunni extremists known as the Islamic State of Iraq and Syria (ISIS), a group al-Qaeda disowned as too extreme. [Continue reading…]