CNBC | US oil settles up 40 cents, or 1.2%, at $33.62 a barrel CNBC Oil prices clawed back gains in volatile trade on Friday after falling on news Iran would not participate in a possible deal between OPEC and other producing countries to trim output. Prices rose on early prospects that a deal between major exporters ... Oil price jumps as Russia hints at production cuts Rosneft downplays talks of oil production cut Oil heading for weekly gain on supply cut deal hopes |