The US State Department has issued a worldwide travel warning to US citizens that runs until nearly the end of February.
The warning states that it believes there are “increased terrorist threats”, despite all the extra measures introduced in airports and increased screening of passengers.
It tells travellers to exercise particular caution during the holiday season and at festivals or events.
The warning comes just days after an American died in the Radisson hostage-taking incident, when terrorists stormed a major tourist hotel in the African nation of Mali. At least 22 people were killed in the attack.
The report say it believes al-Qaeda, al-Shabbab, Boko Haram or ISIL are planning imminent multiple attacks in multiple regions.