US President Donald Trump said Wednesday his administration was preparing to add a "couple of countries" to the controversial list of states whose citizens are subject to travel bans or severe restrictions on entry to the United States.

Britain's Prince Charles said on Wednesday that global warming and climate change are the greatest threats humanity has faced, calling on business leaders in Davos to act now to create a sustainable economic future.

US President Donald Trump said on Wednesday he would love to be attending his impeachment trial under way in the US Senate, but that his lawyers had advised him against it.