Shrewd recruiting of young militants has allowed al-Qaeda to re-establish itself in Osama bin Laden's homeland and around the world in preparation for new attacks on the United States and its allies.Al-Qaeda had not only survived the US-led crackdown against it, but was exploiting loopholes found in its pursuers' tactics, officials in Washington said.Of particular concern are indications that the terrorist network has infiltrated essentially untraceable operatives into the US. Some of them were believed to be planning suicide bombings on soft targets such as subway stations within the next few months, officials said.