There has been a steady drip, drip, drip of criticism aimed at President Barack Obama’s strategy against terrorism, and the threat posed here in the United States. Republican presidential hopeful Donald Trump dominated the debate with his controversial call to bar Muslims from entering America in the wake of the deadly mass shooting by a Muslim couple in San Bernardino, California. Obama’s Oval Office address was examined and torn apart by his fiercest opponents for lacking anything new in the fight against the Islamic State, and for failing to comfort the nerves of ordinary Americans. From the president’s standpoint, those calling for a tougher response by pressing for a new military effort against jihadists are ignoring history – at America’s own peril.