WASHINGTON (AP) — President Barack Obama says the bonds between the U.S. and Britain are stronger than ever, built on shared goals and national ideals.

Obama welcomed British Prime Minister David Cameron at a formal arrival ceremony on the sunny White House South Lawn this morning.

The president told a crowd of several hundred people, including schoolchildren waving U.S. and British flags, that the U.S. and Britain share the belief that their citizens "should be able to live free from fear." He says the two nations "stand united" against terrorists and those who "endanger the globe with the world's most dangerous weapons."

Cameron said he and Obama have a serious agenda ahead, headlined by war in Afghanistan, concerns that Iran might build a nuclear weapon and economic matters.

The prime minister's visit got off to a more relaxed and informal start yesterday, when Obama and Cameron flew to Dayton, Ohio, to take in what turned out to be a dramatic game in the NCAA college basketball tournament. Western Kentucky rallied from a 16-point deficit with five minutes to play and beat Mississippi Valley State 59-58.