Within hours of Wednesday’s attacks, Iraqi Prime Minister Nouri al Maliki said in a statement that the government would reassess the security situation. But Iraqi politicians also assured citizens that the American forces that withdrew from cities June 30 as part of the status of forces agreement between the two nations would not be coming back, despite the attacks.Two truck bombs struck the heart of Iraq’s government — the Foreign Ministry and Finance Ministry buildings — and shattered a sense of relative calm that had prevailed in Baghdad since Iraqi forces formally took control of security from the U.S. military on June 30.The attacks underscore the fragility of Iraq’s security since U.S. combat troops withdrew from urban areas on June 30 and as the country prepares for elections in January. The withdrawal from cities is part of a U.S.-Iraqi agreement signed in January that outlines the complete pullout of American forces by the end of 2011.