Afghanistan swears in new president, first democratic transfer of power since 2001 invasion --- KABUL, Afghanistan (AP) -- Ashraf Ghani Ahmadzai was sworn in Monday as Afghanistan's new president, replacing Hamid Karzai in the country's first democratic transfer of power since the 2001 U.S.-led invasion toppled the Taliban. -- Moments after Ghani Ahmadzai took the oath, he swore in his election challenger, Abdullah Abdullah, as chief executive, fulfilling a political pledge he had taken to share power and defuse election tensions that had threatened to spark violence between the country's north and south. -- In his first speech, Ghani Ahmadzai called on the Taliban and other militants to join the country's political process and lay down their weapons. However, extremist violence Monday killed at least 12 civilians and police officers as foreign forces prepare to withdraw from the country at the end of the year. -- "We are tired of war," Ghani Ahmadzai said in a televised address. "Our message is peace, (but) this doesn't mean we are weak." --- Abdullah, a former foreign minister, spoke first and thanked Karzai for his service and the people of the country for casting votes in the millions despite the threat of attack from Taliban militants who tried to thwart the election process. -- "We are committed as one in the national unity government," Abdullah said. "Our commitment will be fulfilled together as unified team to create national unity." --- Ghani Ahmadzai then congratulated Karzai for a peaceful and democratic transition of power, and he thanked Abdullah for making the national unity government possible. The new president also promised to confront the country's endemic corruption. -- "We want to be held accountable. I am your leader but I am no better than you. If I make mistakes, you should hold me accountable," Ghani Ahmadzai said. --- Karzai - the only president Afghanistan and the West have known since the invasion - wore a wide smile as he greeted his presidential guards upon entering the palace. Karzai has said he is glad to be stepping down after more than a decade of what the U.S. ambassador recently said was one of the most difficult jobs in the world. -- Read More, Associated Press