European stocks slide as Middle East escalation spikes crude and hawkish bets

European stocks declined on Monday amid mounting tensions in the Middle East and heightened expectations of aggressive interest rate hikes from U.S. policymakers. The pan-European STOXX 600 index slipped 0.1% as crude oil prices surged above $90 a barrel following U.S. air strikes against Iranian targets in the region. Despite gains in energy stocks, broader market selling prevailed across continental exchanges, as investors navigated rising geopolitical risk premiums and expectations of tighter monetary policy.

The risk-averse sentiment followed direct exchanges between U.S. and Iranian forces, with Iran retaliating against U.S. troops in Jordan. Crude oil futures rose nearly 3% to trade near $90.60 a barrel, reigniting cost-push inflation concerns for European industrial sectors. The probability of a 25-basis-point Federal Reserve interest rate hike at the Sept.

16 meeting surged to 60%, up from 35% prior to Kevin Warsh's hawkish remarks at the Jackson Hole gathering. U.S. economic data releases throughout the week are expected to keep September rate hikes on the table, with the Fed's heavy data agenda including July JOLTS report, August ADP payrolls, and the highly anticipated nonfarm payrolls report on Friday.

Market participants await ECB decisions and closely monitor Fed speeches from key officials to gauge the level of consensus around aggressive rate tightening.