US President Barack Obama said, Pakistan's real enemy is the cancer of terrorism within, not India. Addressing a joint press conference with the visiting Afghan President Hamid Karzai in Washington, he said, there has been in the past a view on the part of Pakistan that their primary rival, India, is their only concern. Obama said, the US goal is to break down some of the old suspicions and continue to work with the Pakistani government to see their interest in a stable Afghanistan which is free from foreign meddling. He said, the extremist organisations that have been allowed to congregate and use as a base the frontier areas now threaten Pakistan's sovereignty. He said, Afghanistan, Pakistan, the United States, the international community should all be working to reduce the influence of extremists in those regions.<br/>Obama and his Afghan counterpart Hamid Karzai also tried to downplay the recent strain in bilateral ties and said that they share the common objective of eliminating terrorism from Afghanistan. Karzai said that the ties between the US and his country is based on hard realities and despite differences both share the common objective of eliminating terrorism from Afghanistan. President Barack Obama and Karzai agreed to sign a new US-Afghanistan Strategic Partnership Declaration by the end of the year that would replace the existing pact of 2005.<br/>