Trump lashes out at San Juan mayor who begged for more help following hurricane

US President Donald Trump has lashed out at the mayor of San Juan and other officials in storm-ravaged Puerto Rico, contemptuous of their claims of a slow American response to the natural disaster that has threatened the island's future.

"They want everything to be done for them when it should be a community effort," Mr Trump said in a series of tweets a day after the capital city's leader appealed for help "to save us from dying".