Mr. Gingrich said to applause from a crowd in a small airport hangar here. Mr. Gingrich accused the White House of being unwilling to discuss threats from some Muslims. And he slammed President Barack Obama for mounting a “war” on the Catholic Church over contraception but apologize to Afghan President Hamid Karzai over the burning of Qurans.

Turning to Mr. Obama’s apology and the rising violence against American soldiers in Afghanistan, he said, “I think we can look into the mind of a president in the speed and thoroughness with which they have disowned their own people.”