(Updates ahead of Wall Street open, adds U.S. business survey data) * Main European bourses 0.3-0.5 pct lower as Iraq, Ukraine tensions weigh * Crude near 9-month highs on fears of impact of Iraqi insurgency * Wall Street seen down, Nikkei skids to two-week closing low * Fed meeting, China house price data in focus this week By Marc Jones LONDON, June 16 (Reute