WASHINGTON — Republican Mitt Romney and President Barack Obama are trading tough words over the handling of foreign attacks on U.S. diplomatic missions in the Middle East, injecting foreign policy in to a presidential campaign that has focused on a sour economy. Romney accused the Obama administration of showing weakness in the attack that killed the U.S. ambassador to Libya, Chris Stevens, and three American members of his staff. Romney blasted the initial statement from the U.S. Embassy in Cairo as disgraceful and “akin to apology,” adding later, “It’s never too early for the United States government to condemn attacks on Americans and to defend our values.” However, the embassy statement came before the protesters had breached the embassy’s walls and was not an apology but an affirmation of the American policy of religious tolerance and respect. A statement by Secretary of State Hillary Rodham Clinton minutes before Romney’s was released condemned the attack in Libya and said there w...