By Roberta Rampton and Kylie Gumpert WASHINGTON/NEW YORK (Reuters) - President Barack Obama sought to reassure Americans they are safe as millions of people traveled on Wednesday for the Thanksgiving holiday, with security heightened at airports, New York City's parade festivities and other venues after the Paris attacks. "Right now, we know of no specific and credible intelligence indicating a plot on the homeland," Obama told reporters at the White House, flanked by his FBI director and other top security officials. "We are taking every possible step to keep our homeland safe," he said.
Tunisia said Wednesday it is closing its border with Libya, a hotbed of Islamist unrest, a day after a deadly suicide bombing claimed by the Islamic State (IS) group. No reason was given, but the interior ministry said earlier the explosive used in the attack that killed 12 presidential guards was the same used to make explosive belts illegally brought from Libya and seized last year. The National Security Council, headed by President Beji Caid Essebsi, decided to close the frontier from midnight with "reinforced surveillance of maritime borders and in airports", a statement said.