Mr Karzai 's inauguration came against the backdrop of a rising Taliban insurgency , doubts over his legitimacy after an election tainted by fraud and complaints his government is riddled with corruption and mismanagement . " I swear to obey and safeguard the provisions of the sacred religion of Islam , to observe the constitution and other laws of Afghanistan and supervise their implementation , " Mr Karzai said in front of foreign and Afghan dignitaries in his palace in Kabul .