Oil prices stumble on weak China exports hangover

TOKYO (Reuters) - Oil prices fell on Monday after data showing China's overall exports of goods and services shrank for a fourth straight month, sending shivers through a market already concerned about damage being down to global demand by the Sino-U.S. trade war.Brent futures were down 33 cents, or 0.5%, at $64.06 per barrel by 0055 GMT, after gaining about 3% last week, boosted by news that OPEC and allies would deepen output cuts.West Texas Intermediate oil futures were down 37 cents, or 0.6%..