Oil up after Trump assurance on China trade deal

LONDON (Reuters) - Oil prices rose on Tuesday in a volatile session after U.S. President Donald Trump soothed jangled nerves over the status of the U.S.-China trade deal.Markets were unsettled by surprise comments from White House trade adviser Peter Navarro who said the hard-won deal was "over".President Trump later wrote in a tweet that the agreement was "fully intact".Brent crude rose 27 cents, or 0.6%, to $43.35 a barrel by 1413 GMT, having skidded to a session low of $42.21. U.S. oil was..