Property mogul and TV showman Donald Trump fuelled more speculation that he would enter the 2012 White House race with an expletive-laden speech in which he attacked America's "stupid" leaders.
He assured a crowd of supporters at a Las Vegas casino that he was seriously considering a presidential run.
During a 30-minute stump speech focused mostly on foreign affairs, Mr Trump sprinkled in a number of swear words and insults directed towards global leaders.
"Our leaders are stupid, they are stupid people," he said. "It's just very, very sad."
Mr Trump also blasted President Barack Obama's handling of Libya, Iraq, China and Afghanistan, and in one of his many curse-bombs, he lamented the nation's focus on building schools in war-torn Afghanistan while neglecting education in the US. He said he would not help struggling nations such as Iraq or Libya without payment.