Donald Trump Displays Ignorance, Seeks Tweets Over Solutions: Barack Obama

US President Barack Obama disparaged US Republican presidential candidate Donald Trump on Thursday, saying the billionaire seeks tweets over solutions and has "rattled" foreign leaders with his pronouncements.

Obama accused the real estate mogul and former reality TV impresario of making cavalier comments for provocative effect, and he urged all presidential candidates to take the high road in a boisterous and harsh campaign.

Obama said fellow leaders from the Group of Seven nations "are surprised by the Republican nominee. For good reason, because a lot of the proposals he has made display either ignorance of world affairs or a cavalier attitude, or an interest in getting tweets and headlines, instead of actually thinking through what it is that is required to keep America safe, secure and prosperous and the world on an even keel."