US stocks fell on Friday as Israel's attack on Iran shook global markets, leading oil prices to spike after Iran reportedly described the strike a "declaration of war." Israel's prime minister, Benjamin Netanyahu,

U.S. stock futures tumbled after Israel launched airstrikes against Iran. Israel’s defense minister Israel Katz declared a special state of emergency following the attack. Iran has launched retaliatory drone strikes on Israel.

(Reuters) -U.S. stock index futures dropped on Friday after Israel's military strike on Iran escalated tensions in the oil-rich Middle East and battered risk sentiment across global markets.